Gateway PC, Core 2 Quad 2.33GHz, 4GB/640GB, Plus 20" LCD Monitor for $479.98.  Here is a screenshot for your reference.  Order online to confirm price and availability and select in-store pickup to save on shipping.  This configuration includes an Intel Core 2 Quad (quad-core) 2.33GHz Q8200 CPU, 4GB of DDR3 RAM, 6400GB hard drive, 16x dual-layer DVD burner, Gigabit Ethernet, Windows Vista Premium 64-bit with SP1 and more.  The 20" LCD monitor included in this package features a 1600 x 900 resolution and accepts VGA and DVI inputs.  Most places have this quad-core system without the 20" LCD Monitor for about $499.