Thanks for the edumacation chaps,a secondary question if I may.
My mother board has two memory channels A @ B,(four slots)as I understand it XP pro can only use 4 gig of ram, I have two 2 gig chips,would it be best to install the 4 gig in one memory channel or split it up and fit two gig in each channel,the CPU is a dual core jobby.
Would it make any difference?