People should use this tool and Process Explorer to check for suspicious auto run ning entries in case of Autoruns and processes in Process Explorer.
It is not enough to blindly trust your antivirus.
The book Mark Russinovich wrote called "Troubleshooting with the Windows Sysinternals Tools (2nd Edition)" arrived yesterday and I can highly recommend it if you are interested in the Sysinternal tools. The biggest chapters are on Process Explorer and Autoruns! I've read the first few chapters so far and it is excellent. Goes into all the detail of these tools in great depth.