This Program will allow you to edit your Profile and add all the cheats you want. Very easy to use and lets you play with lots of settings in AvP. Try the Nightmare cheat!!
The original AvP utility has now been updated for the new Millennium. It has an easier interface with wizards to help you all along. Now there is no excuse not to use this and unlock lots of new levels for Multi-player.
This disables the use of the CD during play. It has been noticed by some that the game performance suffers slightly when the music CD is not in. Therefore, I assume the purpose is so as not to use the CD whilst keeping an optimal frame rate.