-Uninstall all malicious programs through add/remove program

-Reset internet explorer settings and delete all malicious add ons

-To remove V9 homepage, right click on shortcut, right click on internet explorer, click properties. Then remove the v9 link in the target.

Link for more information and walkthrough:
http://deletemalware.blogspot.com/2013/06/v9-portal-site-removal-guide.html