Malware Removal, already using Avast and Comodo Firewall.?

You don't need to, but to be on the safe side, I have also got www.malwarebytes.net on mine, and i'm surprised sometimes how much crap it finds after my AV has supposedly done its job. ps it's free, and because I may need to do a quick scan from time to time it is handy having it on the desktop to be used manually.

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Yes,you need anti-malware.Here are some suggestions that are free (I suggest you get 2 or 3):

Malwarebytes' Anti-Malware

SUPERAntiSpyware

IObit 360

Norton Power Eraser (you must be connected to the internet to use this utility)

Spybot Search and Destroy

Spyware Terminator

Windows Defender

I used to suggest Ad-Aware too but they have added an anti-virus to the program and it will conflict with the anti-virus already installed on your PC.

You can download all these through CNET at http://www.download.com/

Download Malwarebytes and Combofix from a clean computer. Boot into safe mode no networking. Install and run each from there.

http://www.malwarebytes.org/

http://www.bleepingcomputer.com/combofix/how-to-us...

you don't need to but it still would help to be safe. one that i would recommend is http://malwarebytes.org./

i use is all the time for work and at home and have not had an issue with it.