Help Win32/Nugel.E & BankerFox threats--Fake Security Suite can't delete from computer

I need help.  My husband opened an email joke from a friend and even with Norton 360 up and running, it now has these problems.  It has security threat from Win32/Nugel.E & Banker Fox and Norton says everything is okay but this fake Security Suite has installed itself and it keeps wanting us to purchase from it.  I do not know what else to do to get these problems off of the computer.  Can someone please help?