are u a member on sbs? if not you have to sign up, sign in, go to downloads, click on sbs latemodels, and pick hi res or low res depending on the age of your computor. download it, when its finished click on it and it pretty much does everything for you.
try right clicking it and pick "run as admin" if thats an option. when i go to install mine, it comes up and i click "next", then i have to pick " i agree", then next,...... next 1 more time then start. hope this helps thats the exact way mine goes.