SpamBayes Rocks!
Based on positive comments from someone else (can't find the link right now), I downloaded and installed SpamBayes for Outlook. Two words: It rocks! It's easy to install and get running. One thing to note if you're considering using this for SPAM: It needs to be trained on what is SPAM and what isn't. If you think you *might* try SpamBayes some day, then save your SPAM in a folder. When (if) you ever do try SpamBayes, you can point it to that folder and it will help the training process go much quicker.