How to disable Print Screen or other quick keys.

[Saiko Kila]

I couldn't see it in manual. How to disable screenshot capturing or at least to remap key responsible for it? I always have FRAPS running, and my selected key is the same as the standard in KB, i.e. PrtScr. I used to collect all screenshots (created by game and created by FRAPS) and select the best ones, but I'm growing tired of this (and running out of space and time). I suppose it would be a simple switch in one of the game files, but I couldn't find it.