On our website, we have our Anti-Malware Toolkit located here. You may use those programs within Vista with the following caveats:
1. Dial-A-Fix is incompatible with Vista. 2. Malwarebytes has some drivers that are incompatible with 64-bit Vista, but the normal scan seems to work fine.
Note also that I have not tested every program with both 32- and 64-bit versions of Vista. I'm currently leaving that up to the developers of these programs. When you get your download, look for a Vista version. If there isn't one listed, it's probably compatible. I will post here what I find in my travels.