I can't delete old Hotmail/MSN accounts from OE6. I right click on the
account from the Folder List, click Remove Account and then click Yes to
confirm, the account is still there. If I go to Tools, Accounts, highlight
the account and click Remove it does the same thing. No error message and the
account is still there. Happens with both active and inactive HTTP
(Hotmail/MSN) accounts. I was able to delete an IMAP account no problem.

Thanks