Well you are stuck with an AGP video card since that motherboard doesn't have a PCI-e slot that is now common for video cards so at some point you may want to look at getting a new motherboard. I'd also think about upgrading that CPU to a 64 x2 which there should still be some 939 ones out there though AMD is phasing out that socket at the end of the year just to warn you now.

Regards,
JB