PC Choices!??!

Hi!
Well, I'm going to buy a new computer soon, and I really need help on which one to buy.
So, I'm wondering if anyone can help me find a good computer fitting in my price range: $300-$500 CAN ($294-$491 US).
So, the requirements for the computer are:Windows 7
4GB-6GB RAM
Atleast 2.67 GhZ
Atleast NVIDIA 6600 Graphic Driver (Or other Graphic Driver which is better than this one)
Atleast 500 GB Memory
Atleast 4 USB PortsAnyways, thank you very much!!~Bowex

ebay
i got 4gb ram
3ghz
nvidia 7600 gt
8usb ports
250gb hd for 96 uk pound, not sure how much that is in dollars but not a lot

you mean 500GB hard disk. RAM is memory.A geforce 6600 wont go very far, you should be getting an 8 or 9 series at minimum.

I think you meant Graphics Card.Is it new or 2nd hand your after.Is it just the Base Unit your after.If eBay are selling what you want for $150 with W7 and your not worried about it being 2nd hand,Id say get it from there.