I want to avoid replacing the mobo if possible because I'm a bit of a noob at replacing mobos ( meaning I have never replaced a mobo) and I'm afraid I'll mess something up.
Ya but that would mean new processor too then it would just be a new computer complelely and if i was to do that I d want a better looking case because mine's just blain beige and boring.
I mean sure a better processor, but you can keep the ram, keep the HD, or buy the caviar as you suggested, and you can keep you GFX and buy a brandy new PCI express one when you have more money.
Well, it doesn't include Windows, and you could drop down to a 3000+ or a Sempron (but the price difference isn't that big). You could also go with an older video card.