This deal has ended.
Dell again has a Dimension E521 Desktop that you can get for only $369 if you change the configuration. It has an AMD Athlon 64 3200+ processor and 512mb memory. To reduce the posted price from $569 to $369, change the hard drive to 80gb from 160gb, the CD / DVD drive to the 16x DVD-Rom drive and select "no monitor." Shipping is free. Of note: the 20" LCD monitor (model E207WFP) is only a $260 upgrade.