Please see here:
http://www.spybot.info/en/faq/42.html
You can also rightclick the Spybot icon on your desktop,and choose Run as administrator,if you prefer that.
If Spybot 1.5 is slow to start up,there's a beta test version fix for that in the tracking forum,there's more info about it here if you might like to try it:(I also have an issue where Spybot doesn't start up many times when clicking on it...or right-clicking on the tray icon and starting it that way)
Yes,there's some bugs,but you might like to keep an eye on the tracking forum for posted fixes to problems (or install the helloween edition if you don't mind trying out a full beta,whichever you prefer.)I just think the app needs some work, but I'm grateful because it's free (I am clueless as to how you guys get paid for your good work).