How can i clear an e-mail account from my computer without deleting the account?

I have purchased a Computer with someone Else's account information and would like to remove the account from this computer without deleting their account from from the web. How can I do this safely without jeopardizing their account?|||If you delete it from the computer it does not delete it from the web unless this computer is a exchange server for the web just blank out their account info on the machine and to be sure don't be connected to the web tell your done removing the account|||the account has nothing to do with web


just delete it