Find Fast Answers Virus

I some how got infected with a virus that redirected my browser to a website called "Find Fast Answers".  It was really frustrating because every time I did a search using either google or yahoo I would end up at that stupid website.  What I did to fix the problem was upgrade my browser to the latest version of firefox.  That seemed to work but Im still having the same problem.  Im also going to get an antivirus program McAfee AntiVirus Plus 2011 3-User
for good measure.