StartDreck doesn’t look too appealing. It hasn’t been updated since 2004. I have second thoughts about OSAM too. According to its homepage, the last three versions are in Russian only.
Have you checked out Autoruns yet? Selecting the Logon tab and the Hide Microsoft and Windows entries option give a succinct list. Yup, there’s the Avast! service GUI. 8)
I’m not surprised you have Autoruns after all. It sure provides a lot of information though. I usually use the System Startup display in Spybot - Search & Destroy instead. Any changes are highlighted immediately.