Pop ups are usually caused by spyware/adware,,,Anti-Virus doesnt get rid of spywares,The best way to get rid of spywares,adwares,trojans and pop up is using a best anti-spyware to protect your computer.You must have 1 or 2 antispyware on your computer to protect your computer.Of course there are many solutions exist, all of them with their own strengths and weaknesses.So which anti-spyware is the most suited for your system? You can find out by reading in-depth reviews and comparisons of TOP 5 anti-spywares… some really great tips and links to Spyware removal programs.
Top 5 anti-spywares reviews,comparisons and download links on http://www.************************
You can download and scan your computer for free.
Good luck!

ok most free virus removal tools suck we all know this and most of the pay for ones don’t do that great of a job so yea my advice is to get anti vir its completely free and works just as well as any paid for virus scanners and it will remove em the reason i say its just as great is cuz it’ll monitor all your files and downloads everything pretty much and will find most viruses a lot of others wont but use what you want so long as it isn’t avg people really need to learn avg sucks has always sucked and will alwasy suck get Anti Vir

Download Nod32. It has these features:
>>Virus and Spyware Scan
>>Has built-in features like AMON, DMON, IMON
>>Scans web sites you browse or visit
>>Automatic Updates
>>Size of Updates are onle by Bytes
>>30- day free trial
Download it at eset.com

All of these are ones that I personally use and all are free.After you install any of them,make sure you update them to get the full affect.
Download Grisoft AVG 7.5 Anti-Virus,Anti-Malware.(free)
AVG is a collection of anti-virus protection tools that gives you full protection against viruses, worms, Trojans and malware. AVG provides you with all that you need to be completely protected: including a tool for scanning your hard drive and e-mail, as well as a real-time shield to prevent infections.
Top Features
» Provides automatic update functionality
» Its a reliable anti-virus scanning engine
» Provides free Virus Updates for life
» Options to define file name extensions
» Real time protection with resident shield, email scanning http://free.grisoft.com/doc/5390/lng/us/…
Spybot – Search & Destroy detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications. Spyware silently tracks your surfing behaviour to create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies. If you see new toolbars in your Internet Explorer that you haven’t intentionally installed, if your browser crashes inexplicably, or if your home page has been “hijacked” (or changed without your knowledge), your computer is most probably infected with spyware. Even if you don’t see the symptoms, your computer may be infected, because more and more spyware is emerging. Spybot-S&D is free.http://www.spybot.info/http://superantispyware.com/
SUPERAntiSpyware is the most thorough scanner on the market. Our Multi-Dimensional Scanning and Process Interrogation Technology will detect spyware that other products miss! SUPERAntiSpyware will remove ALL the Spyware, NOT just the easy ones!
Easily remove over 100,000 pests such as SmitFraud, Vundo, WinFixer, SpyAxe, SpyFalcon, WinAntiVirus, AntiVermins and thousands more!

i would go with Avast! home edittion anti virus. In my test working in a computer shop for 3 years avast detects and can repair more viruses then AVG. Avast in my opinion is the best free anti virus software. If you dont want to be cheap and you shouldnt be.. Kaspersky anti virus is the best thing i have ever used. Ad-Aware and Spy bot Search and Destroy work great at removing spyware. Google Tool bar has a good pop up blocker.

Check out .http://computer-probs.blogspot.com/
It has good downloads to detect and eliminate virus/trojans/spyware
Best wishes