One of my cousins used the computer, and suddenly got this toolbar that says "MySearch" in Firefox. Is it a spyware or virus? and how do i remove it?

here's the screenshot
[attachmentid=386]

I think its a bad thing not sure tho have him check if its listed under extensions and remove it, if not try the below.

• Close all open Web browsers
• From the "Start" menu in Windows, select "Control Panel", and then select "Add/Remove Programs"
• Select "My Search Bar"
• Click "Change/Remove"

Further more if still no luck follow this guide and post a hijackThis log here and someone who knows more about this stuff then me will look thought your log and tell you what to do.

Yes, its a mild form of adware I think, you don't want it.

It wasn't under Extentions so removed it from Add/Remove Programs.
Thanks

Make sure you run all your spyware scanners to make sure you got rid of all of it.

If you don't know how much about spyware or what apps to use check out this guide or lunarsofts PC Maintenance Guide.