I have a 2.66 and it still eats up my processor, i'm going to get ht soon... As for the video card, ram depends. I have a 5500 with 256MB and it runs just like a 5200 with 128MB. Now, seeing that your comp is well over a year old, you probably can't get anything above a 6 series card. Also, look for DDR2 memory or DDR3 on your card, though you will be hard pressed to find an agp or pci card with DDR3. DTH, if you comp is about more than a year old it probably doesn't have a PCI-E slot, so your stuck with Geforce 5 and 6 series, or ATI X600 or lower... :-\