Do you have an AntiVirus or some kind of spyware software ? I found this,It tells you how to remove.. http://www.wintips.org/remove-snap-do-search-snap-do-toolbar/
Thank you so much!! I did everything that was shown in the link. I also downloaded adwcleaner, I read herehttp://www.xp-vista.com/spyware-removal/snap-do-removal that i should also download an antivirus and an antimalware program. I already have avast, but now I also installed malwarebytes. When i did the final scan everything was ok, even adwcleaner said there were no infections found : ) thank you.