I wrote a full comparison tool for comparing VCX class to class, VCX to VCX (all classes), PRG to PRG, SCX to SCX, DBC to DBC (schema), and DBF to DBF (schema). Below is a link to my drop box account to download it. If you are interested in the source code, please let me know and I will send you a link for this too.
https://dl.dropboxusercontent.com/u/4750866/GKKCompare.zipGreg
