Ok...I figured out the missing step to uninstall snap(do not want it) from my computer. From reading a few forums I'm not the only one ; )
Go to uninstall programmes. On my computer / windows 7, i clicked start bar (bottom left corner) / control panel / programmes and features.
Find the unwanted programme on the list and click uninstall (option usually up the top or try right clicking on the programme to uninstall)
You will get a yes or no question to make changes to your computer (for me the task bar flashed and i clicked on the icon for this). You want to click yes. Now what I missed was the advanced setting option. Click this and then it will give you the option to delete snap(don't want it). Bingo!!!!
Then all the forums show you how to remove snap.do from your browsers - chrome, fire fox and explorer. Good luck, I hope this helps. If this helps and you find a site which doesn't explaing properly cut and past this and pass on ; )