How to Remove Afirstsvc.com Permanently and Clearly Out of My Computer?

Recently, Afirstsvc.com has been reported to disturb many computer users and makes them very angry. If you are one of the victims of Afirstsvc.com, you are likely to get  a window keeping coming up with a URL pointing to Afirstsvc.com and lots of letters and numbers. It is rather irritating that it never miss to come up whenever you click anywhere on your browser.