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Dell Small Business has their Vostro 200 Desktop for only $499 after $300 instant savings. This is a well-configured machine and relatively inexpensive if you want to upgrade (just scroll across the component icons at the middle of the landing page). It comes standard with a 1.6GHz Intel dual-core processor, 1GB memory, 160GB hard drive, 16x CD / DVD burner, Windows XP or Vista Home Basic (I recommend XP, Vista isn't perfected yet), and a 19" monitor. Shipping is free.