I have been a fan of LADSoft and Orange C for a while now, and I must say that wcc32 is a very promising compiler.
I just wanted to make sure you know about an issue with periods (.) in the source file name or path.
With periods in the source path ("wcc32 /Ac /MD c:\prog.c\wcc32\sieve.c"), wcc32 will create an object file named "sieve", then fail when it can not find "sieve.obj".
With periods in the source file name ("wcc32 /Ac /MD c:\prog_c\wcc32\siev.e.c"), wcc32 will create an object file named "siev.e", which it will successfully link into an executable named "siev.exe".