diff -u dbu52ori/dbu.prg dbu52pat/dbu.prg
--- dbu52ori/dbu.prg	1993-03-04 04:20:00.000000000 +0100
+++ dbu52pat/dbu.prg	2009-06-10 01:37:40.000000000 +0200
@@ -60,6 +60,9 @@
    SAVE SCREEN                                   && the screen you save...
    SET SCOREBOARD OFF                            && who's keeping score, anyhow
    SET KEY 28 TO                                 && some folks need help
+
+   SET DATE ANSI
+   SET CENTURY ON
    
    IF (ISCOLOR() .OR. "/C" $ UPPER(param2)) .AND. .NOT. "/M" $ UPPER(param2)
       * make it pretty
@@ -378,13 +381,13 @@
             
          ENDIF
          
-      CASE FILE(com_line + ".VEW")
+      CASE FILE(com_line + ".vew")
          * look for file name with .VEW extension
-         com_line = com_line + ".VEW"
+         com_line = com_line + ".vew"
          
-      CASE FILE(com_line + ".DBF")
+      CASE FILE(com_line + ".dbf")
          * look for file name with .DBF extension
-         com_line = com_line + ".DBF"
+         com_line = com_line + ".dbf"
          
       OTHERWISE
          * file not found..ignore command line
@@ -395,7 +398,7 @@
       IF .NOT. EMPTY(com_line)
          * command line file exists
          
-         IF RAT(".VEW", com_line) = LEN(com_line) - 3
+         IF RAT(".vew", Lower( com_line ) ) = LEN(com_line) - 3
             * assume a valid .VEW file
             view_file = com_line
             set_from(.F.)                        && restore view
diff -u dbu52ori/dbucopy.prg dbu52pat/dbucopy.prg
--- dbu52ori/dbucopy.prg	1993-03-04 04:20:00.000000000 +0100
+++ dbu52pat/dbucopy.prg	2009-06-10 01:37:40.000000000 +0200
@@ -104,7 +104,7 @@
 
 	* DBF for normal mode
 	files = "dbf_list"
-	def_ext = ".DBF"
+	def_ext = ".dbf"
 
 	* when is a filename acceptable?
 	fi_done = "not_empty('filename')"
@@ -208,7 +208,7 @@
 
 		SELECT (M->cur_area)
 
-		IF RAT(M->def_ext, M->filename) = LEN(M->filename) - 3
+		IF RAT(Lower( M->def_ext ), Lower( M->filename )) = LEN(M->filename) - 3
 			* target has default extension..does it exists in current dir?
 			add_name = .NOT. FILE(name(M->filename) + M->def_ext)
 
@@ -735,7 +735,7 @@
 			cur_el = 1
 			rel_row = 0
 			files = "dbf_list"
-			def_ext = ".DBF"
+			def_ext = ".dbf"
 			filelist(1)			&& display new list
 
 		ELSE
@@ -750,7 +750,7 @@
 				cur_el = 1
 				rel_row = 0
 				files = "txt_list"
-				def_ext = ".TXT"
+				def_ext = ".txt"
 				filelist(1)		&& display new list
 
 			ENDIF
@@ -813,7 +813,7 @@
 			cur_el = 1
 			rel_row = 0
 			files = "dbf_list"
-			def_ext = ".DBF"
+			def_ext = ".dbf"
 			filelist(1)			&& display new list
 
 		ELSE
@@ -828,7 +828,7 @@
 				cur_el = 1
 				rel_row = 0
 				files = "txt_list"
-				def_ext = ".TXT"
+				def_ext = ".txt"
 				filelist(1)		&& display new list
 
 			ENDIF
diff -u dbu52ori/dbuindx.prg dbu52pat/dbuindx.prg
--- dbu52ori/dbuindx.prg	1993-03-04 04:20:00.000000000 +0100
+++ dbu52pat/dbuindx.prg	2009-06-10 01:37:40.000000000 +0200
@@ -240,7 +240,7 @@
 		INDEX ON &k_exp TO &filename
 		CLOSE INDEX
 
-		IF AT(INDEXEXT(), M->filename) = LEN(M->filename) - 3 .AND.;
+		IF AT(Lower( INDEXEXT() ), Lower( M->filename )) = LEN(M->filename) - 3 .AND.;
 		   FILE(name(M->filename) + INDEXEXT()) .AND. M->add_name
 			* add only .ntx files in the current directory
 
diff -u dbu52ori/dbustru.prg dbu52pat/dbustru.prg
--- dbu52ori/dbustru.prg	1993-03-04 04:20:00.000000000 +0100
+++ dbu52pat/dbustru.prg	2009-06-10 01:39:17.000000000 +0200
@@ -811,7 +811,7 @@
 			is_insert = .F.
 			filename = stru_name
 
-			IF filebox(".DBF", "dbf_list", "stru_title",;
+			IF filebox(".dbf", "dbf_list", "stru_title",;
 					   "do_modstru", .T., 13) <> 0
 				* structure created or altered
 				stru_name = filename
@@ -1215,7 +1215,7 @@
 		USE
 
 		* remember if file existed in current directory before
-		add_name = .NOT. FILE(name(filename) + ".DBF")
+		add_name = .NOT. FILE(name(filename) + ".dbf")
 
 		IF FILE(filename)
 			* file exists..modify structure and save old data
@@ -1236,11 +1236,11 @@
 
 			* establish temp filespec and dbt specs in same directory
 			name_temp = SUBSTR(filename, 1, RAT("\", filename)) +;
-						"DDBBUUUU.TMP"
+						"ddbbuuuu.tmp"
 			dbt_spec = SUBSTR(filename, 1, RAT(".", filename)) +;
-					   "DBT"
+					   "dbt"
 			dbt_temp = SUBSTR(name_temp, 1, RAT(".", name_temp)) +;
-					   "DBT"
+					   "dbt"
 
 			IF FILE(dbt_spec)
 				* data file contains memo fields
@@ -1320,8 +1320,8 @@
          CREATE &filename FROM ddbbuuuu.ext ALIAS cAlias
 			USE
 
-			IF AT(".DBF", filename) = LEN(filename) - 3 .AND.;
-			   FILE(name(filename) + ".DBF") .AND. add_name
+			IF AT(".dbf", Lower(filename)) = LEN(filename) - 3 .AND.;
+			   FILE(name(filename) + ".dbf") .AND. add_name
 				* add only .dbf files in the current directory
 				i = afull(dbf_list) + 1
 
diff -u dbu52ori/dbuutil.prg dbu52pat/dbuutil.prg
--- dbu52ori/dbuutil.prg	1993-03-04 04:20:00.000000000 +0100
+++ dbu52pat/dbuutil.prg	2009-06-12 17:43:43.000000000 +0200
@@ -950,7 +950,7 @@
 		SET KEY 24 TO clear_gets
 
 		* call entry in place function
-		name_temp = enter_rc(M->filename,M->irow,M->wl+9,64,"@K!S20",M->color9)
+		name_temp = enter_rc(M->filename,M->irow,M->wl+9,64,"@KS20",M->color9)
 
 		* release down arrow
 		SET KEY 24 TO
@@ -2152,7 +2152,7 @@
 IF FILE(M->filename)
 	* only if the file exists
 
-	IF INDEXEXT() = ".NTX"
+	IF Lower( INDEXEXT() ) = ".ntx"
 		* Clipper index file format
 		k_pos = 23
 
diff -u dbu52ori/dbuview.prg dbu52pat/dbuview.prg
--- dbu52ori/dbuview.prg	1993-03-04 04:20:00.000000000 +0100
+++ dbu52pat/dbuview.prg	2009-06-12 14:42:30.000000000 +0200
@@ -1102,7 +1102,7 @@
 		KEYBOARD CHR(M->keystroke)
 
 		* entry in place
-		filename = enter_rc(dbf[M->cur_area],M->f_row,M->d_col,64,"@K!S8",;
+		filename = enter_rc(dbf[M->cur_area],M->f_row,M->d_col,64,"@KS8",;
 							M->color1)
 
 		IF .NOT. EMPTY(M->filename)
@@ -1110,7 +1110,7 @@
 
 			IF .NOT. (RAT(".", M->filename) > RAT("\", M->filename))
 				* no extension entered..provide default
-				filename = M->filename + ".DBF"
+				filename = M->filename + ".dbf"
 
 			ENDIF
 
@@ -1141,7 +1141,7 @@
 
 	ELSE
 		* insert or enter or menu selection..use filebox
-		ret_val = filebox(".DBF", "dbf_list", "dopen_titl",;
+		ret_val = filebox(".dbf", "dbf_list", "dopen_titl",;
 						  "do_opendbf", .F., 8) <> 0
 
 	ENDIF
@@ -1269,7 +1269,7 @@
 	KEYBOARD CHR(M->keystroke)
 
 	* entry in place
-	filename = enter_rc(M->org_file,M->d_row,M->d_col,64,"@K!S8",M->color1)
+	filename = enter_rc(M->org_file,M->d_row,M->d_col,64,"@KS8",M->color1)
 
 	IF .NOT. EMPTY(M->filename)
 		* something entered
@@ -2790,7 +2790,7 @@
 * get user entered file name..will default to primary + ".VEW"
 IF EMPTY(M->view_file) .AND. .NOT. EMPTY(dbf[1])
 	* default to name of primary data file
-	filename = name(dbf[1]) + ".VEW"
+	filename = name(dbf[1]) + ".vew"
 
 ELSE
 	* whatever the last view was
@@ -2799,7 +2799,7 @@
 ENDIF
 
 * it's better in a box
-filebox(".VEW", "vew_list", "vcrea_titl", "do_creavew", .T., 8)
+filebox(".vew", "vew_list", "vcrea_titl", "do_creavew", .T., 8)
 
 * restore help code
 help_code = M->old_help
@@ -2841,7 +2841,7 @@
 stat_msg("Generating View File")
 
 * add new .VEW files to vew_list if created in current directory only
-add_name = .NOT. FILE(name(filename) + ".VEW")
+add_name = .NOT. FILE(name(filename) + ".vew")
 
 * create structure extended template
 CREATE ddbbuuuu.ext
@@ -3010,8 +3010,8 @@
 USE
 
 * add file name to array of view files
-IF AT(".VEW", filename) = LEN(filename) - 3 .AND.;
-   FILE(name(filename) + ".VEW") .AND. add_name
+IF AT(".vew", Lower(filename)) = LEN(filename) - 3 .AND.;
+   FILE(name(filename) + ".vew") .AND. add_name
 	* add only new .VEW files in the current directory
 
 	* determine number of first empty element
@@ -3081,7 +3081,7 @@
 IF M->from_view
 	* called from set_view
 
-	IF filebox(".VEW", "vew_list", "vopen_titl", "do_openvew", .F., 8) <> 0
+	IF filebox(".vew", "vew_list", "vopen_titl", "do_openvew", .F., 8) <> 0
 		* indicate new View has been set
 		keystroke = 13