I have just successfully installed 1GB RAM in my Time Pc running on XP 3 to add to the IGB RAM already there and had intended to install a further memory module, to bring the total up to 3GB. I thought I might as well while upgrading but when I took the PC case off there is only room for a total of two modules although the specs said four spaces are available. There are two further 'beds' (?) with holes for two more slots though. Is it possible and worthwhile fitting the further RAM ? Can I fit a further expansion slot? Thanks for your help.