that PC has an LGA775 Quad core CPU in it, DDR2 is perfectly fine for that PC. If you intend on Photoshop and MMORPG-ing, i would suggest an aftermarket discrete video card solution, perhaps an HD 5770 ot 5850 if it can fit into that case.
okay, thanks, i was already planning on buying discrete graphics, so thanks, i'll do that. *ordering pc*
make sure that the discrete graphics will fit into the case and your power supply will support it.