If you are experiencing popups then you are infected by malware.
What op system are you using and have all critical upgrades been done?
(do not update critical updates until you are certain you are malware free)
You may want to run Adaware and Spybot from safe mode and then run and post a HJT log in the HJT forum.
Once you get all malware removed then download all critical updates immediately.
You may also want to be sure "Teatimer" is enabled in SPybot and your computer is "Immunized".
You also need Microsoft Windows Defender http://www.microsoft.com/athome/security/s...re/default.mspx
This also provides realtime protection.
Microsoft Malicious Software Removal Tool (Win XP and Win 2000):http://www.microsoft.com/security/malwareremove/default.mspx
AČ - Free from http://www.majorgeeks.com/download4281.html
. Run it, click Search for Updates, then click Scan.
Set Windows Updates to update and install automatically at a time when you are certain your computer will be on the net.