Hey man thx 4 the link!
Always wanted 2 know how to open those "fake cab" files: even WinRar or WinAce don't handle them - I wonder why
As for the possible CRC check, there is no need to bother about that: CRC only deals with data
integrity, not data content (such is the case for all archivers in fact). So altering "cab" file's content shouldn't create any probs