DnsHijacker but norton internet wont get rid of it

i kept being taken to a site toseka or something like that i forget anytime i searched something different. i looked online with google and it said that more then likely i had a dnshijacker when i scanned/scan my computer it doesnt even find it and it still takes me to some other seach engine when i click on the direct link eg a video on youtube, i have norton internet security 2009 i’ve tried avg also just 2 see if it would work but it wouldn’t…any help would be great