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Lenovo.com has the ThinkPad R61i 1.6GHz 1GB 80GB 15.4" for $529.12.
1. Select Genuine Windows Vista Home Basic [subtract $36.75]
2. Select 2 GB PC2-5300 DDR2 SDRAM 667MHz SODIMM Memory (2 DIMM) [add $30.00]
3. Select 120 GB Hard Disk Drive, 5400rpm [add $18.75]
4. Enter 15% off coupon code "USPSAVEMORENOW" [Exp 5/26/08]
Final Price for this deal: $622.50 - 15% = $529.12 + Free Shipping

Description:
* Intel® Pentium® Dual Core T2370 processor (1.73GHz 533MHz 1MBL2)
* Genuine Windows Vista Home Basic
* 15.4" WXGA
* Intel GMA X3100, GM965, 1394, S-Video, PC Card/PCIe
* 2 GB PC2-5300 DDR2 SDRAM 667MHz SODIMM Memory (2 DIMM)
* UltraNav (TrackPoint and TouchPad)
* 120 GB Hard Disk Drive, 5400rpm
* CD-RW/DVD-ROM 24x/24x/24x/8x Max Combo Ultrabay Enhanced
* ThinkPad 11a/b/g Wi-Fi wireless LAN Mini-PCIe US/EMEA/LA/ANZ
* No Bluetooth
* 6 cell Li-Ion Battery ( 2.4 Ah )
* 8932: 1Year Express Warranty