It depends on what you want to do. If the PC does all you ask of it then theres little point, if you want to play the newest games I would suggest a new graphics card and another 512mb memory. If it ain't broken don't try to fix it.
Do you know if you have an AGP port or a PCI Express port on your motherboard, if not do you know the make and model of your motherboard. If you're not sure on that either click here this will tell you.
Memory Summary Capacity 1536 MBytes Location System board or motherboard Maximum Capacity 1536 MBytes Memory Slots 2 Error Correction 64-bit ECC Name Physical Memory Array Use System memory Maximum Memory Module Size 4096 MBytes
Couldn't find the LA version but heres all the others click here they all have AGP so you need an AGP card, now you have to decide how much you want to spend, £50, £75, £100 or more. Would suggest the PNY 6600GT if you can get it its PC Advisors only AGP card listed or if you can get it a ATI 9800 PRO, older card but good value. If you don't want to spend that much then this card is good for the money but the 9800 Pro and the 6600GT are better, but for the moneys its very good value click here= plus you get 3 games and a mouse. I had the one below this about a year and a half ago and it cost me about £120.