Ok, start by uninstalling these programs. Alot of free programs have malware bundled with them.
Free Internet Eraser
Free PDF Converter
Free Video Converter V 1.0
Eusing Free Registry Cleaner
AML Free Disk Defrag 1.1
TweakNow RegCleaner
Now go into your firefox extensions and disable/uninstall
Dealio
Search Settings
Close out your browser and then try searching again and see if you still get redirected.
Free Internet Eraser
Free PDF Converter
Free Video Converter V 1.0
Eusing Free Registry Cleaner
AML Free Disk Defrag 1.1
TweakNow RegCleaner
Now go into your firefox extensions and disable/uninstall
Dealio
Search Settings
Close out your browser and then try searching again and see if you still get redirected.