You’re actually better off getting a new netbook than trying to save cash on a used one.
The toshiba 205 I got at Christmas is now almost 100.00 more than when I got it.
an actual 9 hour battery life and win7, runs office, acrobat 8 and photoshop6 just fine.
http://www.amazon.com/Toshiba-NB205-N230-NB200-10-1-Inch-Netbook/dp/B002OEBIHE
If you actually want a cheap used laptop, check out Interconnection.org
http://www.interconnection.org/get_retail.html
The sales go to support the low income training program.