If your just looking for something to surf the web with you'll easily find a new laptop for that price.
The maximum RAM you'll need really is no more than 3gb, with a 160gb hard drive or 320gb if your going to have lots of songs.
Compaq with 4GB RAM and a 500GB hard drive on Windows 7
http://www.pixmania.co.uk/uk/uk/1164...26ea-15-6.html
Also plenty NEW here under £300
http://search.laptopsdirect.co.uk/la...ounds/page.asp
3GB Ram will be more than enough, but the higher the RAM and faster the processor speed the faster it will work.
I use a Toshiba Satellite with 2GB and 160GB Hard drive and it copes just fine with browsing.
Imo i wouldnt bother buying the pointless 'Add-Ons' they try to sell you like Norton security, theres equally good software out there for free!