Windows Police Pro

I believe that I have Windows Police Pro on my computer. I don't know how I did this. I just know this morning I got these security warning messages that kept popping up, but the page could not be displayed. Then after that I got a screen with this writing on it, I can't remember what it said, but I had to restart my computer. After I restarted I noticed that when I tried to do a search on google.com in Opera, I got either a blank page or when I clicked a link a new tab would open to places such as searchfindsite.com, wecrawler.com, or a site called iprowl. So I did a scan with McAfee which found 11 items on my computer. The items FakeAlert-Gv, Generic Downloader.x!bff, Generic Downloader.x!yj, Generic.dx!bbc(found twice), and Generic Downloader.x!bcj (found 4 times) were quarantined; PrcViewer was detected but I removed the file; And Generic Rootkit.d!rootkit was susposed to be removed. I decided to do another scan and the Generic rootkit was found and I guessed removed again, but since the rest of it was not detected on the second scan I thought everything was okay. But I did still have the problem with google and Opera. I decided to click the gold shield on the taskbar of my computer to do updates. I did the updates a couple of times because it didn't seem to be working. Then I decided to upgrade to the latest version of Opera hoping this would help the problem with google. While I was downloading I noticed a silver on the taskbar, and when the download was finished Windows Police Pro popped up telling me I had all kinds of viruses. And now everytime I try to click on somehting I get error messages. I started my computer in safe mode with networking. Then I did a search for Windows Police Pro and six files, but I'm not sure of what to do.