AVG Antivirus is a very capable Antivirus software that automatically updates, scans and protects you from viruses.  It's free, and unlike your current antivirus program, it won't annoy you http://free.grisoft.com

The internet still has some free goodies out there, here are a few trustworthy and useful downloads.

Mozy is an backup program that stores your data online.  It's automatic and easy to set up.  Not sure about the security?   Mozy can't even open your files once you encrypt them.  www.mozy.com 

Picasa is another wonderfully free product from Google.  It's a picture editor and organizer.  You can also email directly from it.  The key thing is how well laid out the interface is.  www.picasa.com

Plaxo is a great add on for Outlook and Outlook Express.  It backs up and synchronizes your contacts and calendar between multiple computers.  Share info with yourself or family.  www.plaxo.com