new file mode 100644
--- /dev/null
+++ b/runtime/syntax/def.vim
@@ -0,0 +1,57 @@
+" Vim syntax file
+" Language:	Microsoft Module-Definition (.def) File
+" Maintainer:	Rob Brady <robb@datatone.com>
+" Last Change:	$Date$
+" URL: http://www.datatone.com/~robb/vim/syntax/def.vim
+" $Revision$
+
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+  syntax clear
+elseif exists("b:current_syntax")
+  finish
+endif
+
+syn case ignore
+
+syn match defComment	";.*"
+
+syn keyword defKeyword	LIBRARY STUB EXETYPE DESCRIPTION CODE WINDOWS DOS
+syn keyword defKeyword	RESIDENTNAME PRIVATE EXPORTS IMPORTS SEGMENTS
+syn keyword defKeyword	HEAPSIZE DATA
+syn keyword defStorage	LOADONCALL MOVEABLE DISCARDABLE SINGLE
+syn keyword defStorage	FIXED PRELOAD
+
+syn match   defOrdinal	"@\d\+"
+
+syn region  defString	start=+'+ end=+'+
+
+syn match   defNumber	"\d+"
+syn match   defNumber	"0x\x\+"
+
+
+" Define the default highlighting.
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_def_syntax_inits")
+  if version < 508
+    let did_def_syntax_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+  HiLink defComment	Comment
+  HiLink defKeyword	Keyword
+  HiLink defStorage	StorageClass
+  HiLink defString	String
+  HiLink defNumber	Number
+  HiLink defOrdinal	Operator
+
+  delcommand HiLink
+endif
+
+let b:current_syntax = "def"
+
+" vim: ts=8