Please follow these steps:
First run your anti-virus program.
Install both of these free programs
Spybot S&D...
http://www.safer-networking.org/en/download/Ad-Aware SE....
http://www.majorgeeks.com/download506.htmlMake sure after you install these you also install all updates.
Run both programs and delete the bad stuff they find.
Install CCleaner...
http://www.ccleaner.com/ and run it but don't clean the "ISSUES" area of the program unless you know what you are doing.
Install Spywareblaster....
http://www.javacoolsoftware.com/sbdownload.htmland update.
Install CWshredder..
http://www.majorgeeks.com/download4086.htmlrun this program to remove CoolWebSearch
Now go here and download HJT...
http://www.majorgeeks.com/download3155.htmlOnce Hijackthis is installed
"DO NOT RUN THIS PROGRAM"until you have professional help.
Go here to get this help...
http://castlecops.com/forums.html sign up and tell them what you have installed and what you have run for programs this far.
You have already made one of the best decisions by installing FireFox but you still have garbage on your computer. If you follow these steps you will have your computer back to normal.