I use HIJACKTHIS to list all about what's under the hood. Specifically I would be looking at any item called SETUP and any startup items. Then I might google them before deletion.
For the last few months, I have had this screen pop-up every time I start the computer: http://www3.sympatico.ca/drosera1/switches.jpg
I have found out that it is some kind of Windows XP manual command line chart, and I figure that it must have started coming onscreen since a previous update installation.
What I can't find out is how to stop it from showing up every time. What's the trick?
I'm running Windows XP, obviously. I don't think you need to know more than that for this?