hi,,,, usually this stuff is saved in the browser that your using,,,, if its firefox then your in luck as its easier,,, open the browser,,, click on tools top left click options clicl security tab click saved passwords,, click show passwords and delete the ones you dont want,,,, in IE its a bit more of a job,,,, its known as auto complete and i know that you can clear it all but dont know if you can clear individual entries like in firefox,,,, as i dont know much about IE as i dont ever use it (its total crap) here is a link that might help you more
http://www.microsoft.com/windows/internet-...er/privacy.aspxi mean,,,, why make something so simple as this so complicated,,, firefox,,, there it is,,, delete,,, done..
good luck.