All of my Search Engine choices have gone.?

[Marian]

I don't know what happened to them. The Search Engine Manage box says I don't have ANY Search Engines active. I did have AVG Search Engine on. I also had access to Firefox, Google and Bing Search Engines. All are now gone. A few days ago, Conduit.com was on my computer, somehow, but I have since deleted it. Any advice on how to get the Search Engines back? I have an AVG license for it, but I don't have Remote help. Someone else also has been using my email address as I have been getting email return notices that I never sent. I have now changed my Password. I have Windows XP Pro, and use Mozilla Firefox. Would doing a System Restore get them all back on?
I bought a one yr. license from AVG - 2014.

[Samoil]

Yes you might try a system restore if all else fails. You can just set the restore back to a date & time that everything was working right.

[Anil Valvi]

Kindly Call on Toll Free - 1-800-391-8402, I will assign technician