I had an awesome time building my new computer. Learned ALOT of things. Id reccomend trying it, but not trying to turn it into a buisness. You're only going to get burnt in the end. Prices on hardware on constantly dropping, new and improved hardware is always hitting the shelves, it's just too hard to stay ahead of the game, and actually make a profit.

Although Im no expert in CPU's and such..From what I've heard, alot of programs in the future will fully utalize the 4 cores, because currently some don't.

I don't know, I'd wait. When there's more games and things out there that are more CPU demanding, then I'd think about it. But for now, I don't think it's too necesary to upgrade from what you have.

Depends if you want that 5-10% performance increase..Because basically, that's all the 4870 is.