I've been installing this software on many of my clients home computers in the last year. Its a great free virus scanner that has all the power of Norton or McAfee without all the annoying paying, and heavy system load. Its called AVG Antivirus and its free for home users. It is VERY up to date, and you can schedule it to get new virus definitions every night. Its very reliable as well. It will do system scans and will scan all incoming email. Also includes an outlook plugin. If nothing else, check this beast out and install it on your clueless aunts computer so she stops asking you to come clean the newest worm off. [url]http://www.grisoft.com/us/us_index.php[/url] ;)