I have an Acer Travelmate 8100 that you might be interested in. Got me through 4 years of engineering school. Specs are:
Pentium M 2.0GHz
WSXGA 1680x1050 LCD
ATI Radeon X700 GPU with 128MB of graphics memory
1GB DDR2, expandable to 2GB
100GB HDD
8x DVD-R/RW dual layer drive
802.11 A/B/G wireless
Second battery, swappable with the DVD drive
It’ll have a fresh copy of Windows XP Pro SP2 installed (from Acer restore DVD), along with a full install of Microsoft Office 2007 (disc incuded).