Some programs you might find helpful.
AVG - Anti Virus
This is the best anti virus I've been able to find. I believe it's better than Norton, McAfee and all the "pay for" varieties - and it's FREE!
Ad Aware
Ad-Aware Personal provides advanced protection from known data-mining, aggressive advertising, Trojans, dialers, mal ware, browser hijackers, and tracking components.
Spy Bot Search & Destroy
SpyBot Search and Destroy is used to remove spy ware from your computer.
Win Patrol
This utility will stop most programs from installing themselves in your startup folder - the single biggest cause of slowing computers down.
Hosts File Update
Use this location to update your "hosts" file. I'd suggest you do this at least once a month
Microsoft Memory Test
A simple test to see if your RAM is failing.
Google Guide
Get your moneys worth out of Google
Jpeg.bat
A simple utility for photographers that shoot in both RAW and JPG. After you copy your pictures to a directory on your hard disk, copy this file into the same directory. Once in that directory, simply double click it. It will create a sub-directory (called "jpeg") and copy all the JPG's into it. You can then view your pictures with a simple viewer like IRFanview and not have it slowed down by RAW files. When you're finished viewing your pictures, simply delete the "jpeg" directory created. The original files will remain and not modified in any way.