Outlook 2002

Every time I open Outlook 2002 (at home) I get 5 emails from one web site where I had an account. They are forum replies. I deleted the replies off my email server list and off my email locally so they now are gone. But everytime I open Outlook the same email come back as if they are being downloaded new. Same emails, exact same in every way. Is this a virus/trojan or something and how do I get rid of it? Thanks bruce