Replying to Anti virus help needed asap!

earlier today this thing came up on the bottom right of my screen (taskbar) and said "You have a security problem!"  and its my little antivirus warning thing, so i clicked it. It brought me to a reported attack site, and gave me the options of "get me out of here" and "why is this site blocked?" with a warning about how it could be an attack site etc etc.

But since then, it pops up probably every 10 seconds, after i click get me out of here. It's really starting to piss me off...i like to do things uninterrupted.

so computer geniuses of NS-how can i stop this whole process? I don't mean allow this site access, but stop it from trying to access my computer so i can be online in peace without this damn warning.

basically....i wanna make it go away without damaging my computer