I hate forums,
Such a name is pretty inappropriate for a public forum. Nonetheless, I will help you anyway. As brummel has already posted, you could set your characters AIMAin to the Intellimatter script he provided a link to. Also, try changing the characters rate of fire to 1. This will make them shoot faster. Change the characters View Cone Angle to something like 90, and this should just about do it. Of course, you can enhance the characters performance as well, by messing around with the Health and Speed settings. So, in a conclusion:
AIMain | Intellimatter.fpi
Rate of fire | 1
View cone angle | 90 or higher
Health | Whatever you want
Speed | Whatever you want
However, note that changing the characters speed not only slows down how they move, but also how they attack.
Hope this helps,
Tom