I've had really bad problems with some of these so do you mind if I ask weather I should load this one?
Windows Malicous Software Removal Tool. - Size: 732 KB
After the download, this tool runs one time to check your computer for infection by specific, prevalent malicious software (including Blaster, Sasser, and Mydoom) and helps remove any infection that is found. If an infection is found, the tool will display a status report the next time that you start your computer. A new version of the tool will be offered every month. If you want to manually run the tool on your computer, you can download a copy from the Microsoft Download Center, or you can run an online version from microsoft.com. This tool is not a replacement for an antivirus product. To help protect your computer, you should use an antivirus product.
More information for this update can be found at
http://go.microsoft.com/fwlink/?LinkId=39987