Using SpyBot

I installed Spybot on a few systems and it works great. On one system, I asked it to warn me when a site tried to install spyware, as I wanted to see where the spyware was coming from. Ok now I know, but it all the settings, and I can not find the switch to say, I want to block, without a warning message. I must be overlooking the obvious, but if anyone can tell me hoe to turn this feature on/off I would appreciate it.