have to rebump this, sorry.

i am going to be putting my n900 on ebay (need the money) asap, and need to wipe all my info off and go back to default factory settings. i dont want any way for my info to be restored or brought back once it's sold. i know NOTHING about linux or X terminal, so is there a quick or @ least somewhat easy way to do this? i apologize early on for my noobness, but any help i can get would be appreciated.