On Mon, 5 Nov 2007, Josh Scholar wrote: [...]
OK. I need to access COM to do this, and I notice that in "What it WINELIB" it says "Also missing are some of the more exotic features of Microsoft's compiler like native COM support".
What won't work is if you're using statements such as '#import' in your C files. See http://support.microsoft.com/kb/317217 for a sample of this type of construct. This was present in Visual C++ 6 already.
As long as you stick to standard C code you should be fine.