Staples - HP Pavilion p6112p PC Bundle: Intel E6300, 8GB RAM, 1TB HDD, SuperMulti DVD Burner, HP w2338h 23″ Full HD HDMI Monitor, Vista Home Premium 64-bit for $680 + Free Shipping

This is a pretty good deal for a fully equipped PC.  If you are into playing games, all you need to do is upgrade the video card and you will be good to go.  This should also qualify for the Windows 7 upgrade.