thanks for all your help, and the list. One final question if i buy a graphics card new i would imagine my old one will no longer be available, just wondered what i have to look for. mine is currrently nvidia geforce 7600gs 256mb ddr2 , and i noticed the interface said pci express is that all i have to look ?for i.e. would this do? NVIDIA GeForce 8400 GS 512MB DDR2 PCI-E- microdirect.co.uk thanks again