i recently got a hp slimline s32000n i would like to build it up a lot! but i don know how much i can do to it considering the size and shape............................ i want to know if there is a graffix card i can get for it at all or any pci express accessories for it? how much ram can i put in it and is there space for a slave drive at all? if you can shed some light on the subject that would be great thanks