Do the cracks decompress without any errors ? First of all, do a reinstall from the original discs and tell us if that works without any crack applied. If it works, make sure you update the game to the latest version, and then apply the nocd of the same version. Also, you HAVE to be a bit more detailed about "getting nothing". What does it do ? Crash to desktop ? Blue screen ? Error message ? What exact error message ? etc....
Edit : hey ! photo finish ! And I lose