Using Explorer 6 with XP.
That's your biggest problem. IE6 is a HUGE bug magnet now that MS stopped support for it. You need to be on IE8, at a minimum.
Every browser iteration since IE5 has had built-in pop-up blocking. If you're using a third part solution, uninstall it and see if the built-in pop-up blocker does the job.
Using Explorer 6 with XP.Internet Explorer 6 is way out of date! It was also a disaster regarding vulnerabilities to malware.
The quickest solution is to go to http://www.mozilla.org, download and install Firefox and see how that works for you. I'm pretty sure that Firefox has a setting to prevent popup windows. There are also add-ons that will lock down the web browser to avoid getting malware.
Also, as someone else on this thread mentioned, there is a good chance you have viruses or other malware on your computer. There are several free anti-virus programs that can help you clean up your system. I don't normally run Windows, so I haven't kept up with the latest reviews, but I'm sure others on this forum can provide suggestions.
Holy hiatus. IE is a pox on the internet. Google Chrome, Firefox, anything but IE. In reality I think it important to have more than one browser you use on a regular basis, just as a check and comparison on how things work or don’t. If you don’t, you have no idea about speed of page loading email support, quirks, popup blocking, chat functions, video viewing, etc etc.