i have heard of abit guru...but am not familiar with it.
i think it is a windows based program, and if so, yes that was your first mistake/problem.
a few things:
read up about overclocking thru bios.
i'll give you a few pointers, tho...
ram speed (probably is overclocked too much, but i don't know what speed it is stock).
company of heroes. ie. dude that is a wicked cpu/memory intensive game, and 1gb probably wont cut it with the settings turned on anything but low/medium maybe.
"nagasama no longer drinks tecate, or streaks out of the night for anything, and he has a fine wife so he has no use for your girlfriend...she is safe..."