OP: what is your budget? Are you looking for anything specific in this laptop, or just web browsing? How large a screen would you like? Are you okay buying refurbished?
If all you want is web browsing, I would recommend a netbook. The ASUS Eee line is amazing.
And I have a link somewhere that allows you to set up a laptop as a network monitor. I'll post it as soon as I can find it.
This should help you out.