Added note about SDL_config.h

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402494

VisualC.html

@@ -45,6 +45,10 @@
 			This is done by right clicking on each project in turn (Projects are listed in 
 			the Workspace panel in the FileView tab), and selecting "Build".
 		</P>
+		<P>
+			If you get an error about SDL_config.h being missing, you should
+			copy include/SDL_config.h.default to include/SDL_config.h and try again.
+		</P>
 		<P>
 			You may get a few warnings, but you should not get any errors. You do have to 
 			have at least the DirectX 5 SDK installed, however. The latest