Also, just realized that you might get bottlenecked at your RAM or CPU. 2 gigs isn't a lot these days, I'd also advice upgrading to 4gb if you can.
Nice thing about getting these two parts together is if you decide to build a new PC, you can transition these parts with it.
Actually 2GBs isn't too bad for this system. He has limited room to grow this system due to age and it would be best that he save the money he would spend on an extra 2GB and throw it into a new system once he can afford one. Sometimes it is best just to leave the system as is and save for a new one.
Raptorking - You should go with what your saying and do the least possible to get this system working and then start assembling a new system. You have really started to reach then end of life on this one.