How do you prevent movies from automatically playing every time the computer is restarted?

I recently installed AnyDVD w/ the HD package on my HTPC. I use PowerDVD Ultra to play my movies including HD DVD and Bluray. It's my first HTPC and I am doing a lot of reboots. Everytime the computer starts, AnyDVD scans the drives and PowerDVD will then automatically start any movies. If I remove AnyDVD from startup, then the problem no longer occurs but because this is an HTPC it would be nice to leave it running all of the time.

Thanks for your help.