Aaaaaaaaah!!!

Normally, I feel like I'm a pretty capable person. I'm not the best, but I can take care of myself for the most part. But the things I absolutely hate are computer problems. They make me feel puny, insignificant, illiterate, and helpless. I keep my spybot, my antivirus, and windows all up-to-date. And yet there I am on the internet, searching for something-or-other and up comes a message window from internet explorer that tells me that I may have this virus and that I need to check my computer for it. No matter which button I click (the scan, don't scan, or x) it leads me to a pop-up for this program - winfixer2005. It tells me to download it and scan my computer with it. Foolish me, I think, "OMG! What if I do have a virus? The original indicator was from internet explorer and not a pop-up - so it's for real, right?" So, I download it. It scans my computer and tells me that I have 7 threats, but I have to buy the program in order to deal with them. So, I run spybot and get rid of them - the threats. Then, I uninstall winfixer2005 and that's when my internet issues start up. I'll be on the net for a few minutes, and then a pop-up overrides my screen. The pop-up could be from some random thing or it could be for winfixer. I exit the pop-up, and then the original window I was operating the internet in doesn't work like it should - all of the commands don't function. The refresh, back, stop, favorites, search, etc. buttons let me click on them and then nothing happens. I can still perform the actions from my keyboard, but not on screen. And then the file, edit, view, etc. drop down menus refuse to drop down. I can click file all I want and nothing appears, nothing drops down, nothing happens. Well, the last time this happened to me (alas! something similar has happened!) I went into the manage-add-ons option and disabled all the add-ons that I didn't recognize. That seemed to work. This time, I still get the annoying pop-ups (and I do have a pop-up blocker), but they don't disable my window. So, I have no idea what's up. If you have an idea, please pass it on to me. I don't know what to do.