Recently, I went through a spree of deleting programs after my younger brother had downloaded a lot of problems, among these was something called "SnapDo" and is really annoying me, I have uninstalled it and everything, but when I use the address bar on firefox to search something, for example, if I type in "What is the square root of 4" It'll re-direct me to this http://search.snapdo.com/?category=Web&p=1&st=ds&q=What+is+the+square+root+of+4 Although it may not seem like a problem, the page is very slow and littered with unrelated topics with more complex things being searched, so it boils down to, how can I change how the address bar searches things?