Why are you complaining about it popping up?? Ooopps, hang on, thi isn't
Jet Blast 
What are YOU doing here,
Mr D?
Anyway, are you running Windows XP?
Have you downloaded Service Pack 2...if you can't do it via the Internet, send away for your FREE CD rom version.
SP2 contains a pop-up blocker - but so should some of that other crapware that you've downloaded.
To check and see if you already have it, click on "Tools"..."Internet Options", then "Privacy" and look at the bottom of that box.
If you don't , click on "Programmes", then select one of those programmes that you've downloaded and go through their options.
You've probably got a pop-up blocker somewhere - it's just a matter of finding out where.
Stay away from those triple x sites - that's usually where you pick these sorts of things up from - entering unprotected!!