This is the virus and this is the removal guide I found: http://freeofvirus.blogspot.com/2011/06/vista-internet-security-2012-removal.html
I did step 1, and terminated the process in Windows Task Manager but I can't edit the registry (step 2) because the "Run" program just doesn't work. It tells me that "regedit" and "cmd" .exe are not found.
I tried in both SafeMode and Normal Mode ang I got the same message. I can't open any .exe basically.
So how do I get in my registry ?