How do I remove a "phishing" site from my computer?

Hi ! Norton... When I visit one Of my blog this site called Slotobar - I was told is a phishing website opens automatically, and I would like to know if you could please remove or tell me how to remove... I have Norton installed through Comcast. I'm afraid Of this website-causing a virus on computer too !
This website   https:// slotobar.com/en/?partner=p18837p69481p4c75 automatically open in my browser, I was using internet explorer now I'm using Mozilla Firefox...please help !

Thx