[gh0sth@cker]

Are you sure you are applying the crack properly.
First extract the exe from the rar file using WinRAR
Then make sure you put it in the correct directory. You can be sure you are putting it in the right place if it asks you "Do you wish to overwrite the existing file" (unless of course you are changing the original exe's name beforehand.)

This is the folder you where you should put the no-cd crack if you allowed it to install to it's default directory.
C:\Program Files\Rockstar Games\Grand Theft Auto Vice City

You must make sure that you are using the gimpsrus crack as others have mentioned - it can be found on GCW and it says gimpsrus around it somewhere/