For those of you interested in buying this with the Radeon 9800, you can get a better CPU for a little bit more.
For example, get it with a P4 2.8 ghz 800FSB but only 256M of RAM for $550 after 10% coupon and $100 rebate. Get it with a 3ghz/800fsb for $610. Get it with the Radeon 9800 for $130 more.
Found the instructions on another bargain site, but basically:
Start at Small Biz. Click Desktops, Dimension 4600, Customize and Price (right hand column, $899). Select desired CPU. Select Rebate. Select Free Norton AV. Select Free 80GB HD upgrade. Select Free 48x CDRW upgrade. Select No Monitor. (optionally, Select Radeon.) Select No speakers.
-B