diff -r 9db23d43dd6d Source/cmLocalVisualStudio7Generator.cxx
--- a/Source/cmLocalVisualStudio7Generator.cxx	Sun Dec 19 21:45:11 2010 -0800
+++ b/Source/cmLocalVisualStudio7Generator.cxx	Fri Dec 31 11:25:20 2010 -0800
@@ -564,7 +564,7 @@
   // The YX and Yu options are in a per-global-generator table because
   // their values differ based on the VS IDE version.
   {"ForcedIncludeFiles", "FI", "Forced include files", "",
-   cmVS7FlagTable::UserValueRequired},
+   cmVS7FlagTable::UserValueRequired | cmVS7FlagTable::SemicolonAppendable},
 
   // boolean flags
   {"BufferSecurityCheck", "GS", "Buffer security check", "TRUE", 0},