Before I run certain hardware intensive games like Titan Quest on my marginal system (P4 3.2GHz, 1GB DDR dual channel, NV7600GT AGP8x) or my son's (Athlon XP 2400+, 1GB DDR single channel, Radeon 9800Pro 128MB AGP4x), I have to unload the resident portion of my backup software. On my son's PC...