I don't know but do you know whether your ISP offers spam blocking features? My ISP is Earthlink. I use both Outlook Express and Outlook 2003 for email. But, I really control spam by logging onto my email address via Earthlink's WebMail access and creating my whitelist/address book there. It's been a very effective way of controlling spam. Every day, Earthlink also send me a list of stuff that is suspect mail. If I think there's something there that I want, I just logon to WebMail and add that sender to my online address book or, if it's likely to be a one-time occurrence, must move it to my Inbox but not add the sender to my address book.