This deal has ended.
Through 2/14, Dell has a Dimension E521 Desktop with Windows Vista Home Basic, a 250gb hard drive, 512mb memory, 16x DVD-Rom drive and AMD Athlon 64 3200+ processor that is only $389 if you change the configuration. It is listed at $519 with a 15" LCD monitor but drops to $389 if you select "no monitor." Alternatively, you can upgrade to their E207WFP 20" LCD monitorfor $260, or $649 total. Shipping is free.