How do I report/block sites the pop up & the pop up blocker does not block these pages from popping up in a new tab? I want these couple pages to be blocked & not allowed to pop up again, how do I do this?

I have about 3 different sites that pop up in a new tab, one about cleaning my computer, one about a download registry, and another from Walmart saying I've won something (yeah right). Anyway, I'm not sure how to block these pop-ups. The pop-up blocker is obviously missing these pages that are popping up. I want to know how I can add these to the pop-up blocker so that they will no longer pop-up on my computer. I have searched every option in the tools area and have found nothing. I have been having this problem for quite a while, and to be honest it is getting to be a pain in the you know what. I would like to know how to block these sites from popping up in my browser. Can you PLEASE help me????