Go to HP Shopping, Choose desktops >Compaq Presario PCs >S6000Z series >customizable pcs >Configure as:

FREE UPGRADE from AMD Athlon(TM) XP 2800+ to 3000+ [+$50]
40 GB 5400 rpm Ultra DMA Hard Drive [-$40]
3.5 in. 1.44MB Floppy Drive [-$39]
No Speakers [-$20]
Total: $459 - $50 rebate [Exp 3/30] = $409 with free shipping.
Other specs: XP Home, 48X CD-ROM, Integrated 5.1 Sound