Spyware 2009/BankerFox.A/Win32

i turned the computer off and tried to reboot again...now all i get is a black screen..can't even get to the windows starting up and user names. Am i totally screwed now?

OS=Operating system.
The system running.

The preference window is usually only on XP/2000/2003 server.

About this infection, if it was or is Virut, it could have caused this.

The new variant of Virut I see a lot of edits the userinit value to add it's own file, if mcafee changed anything of userinit while uninstalling, it could explain it situation.

See here:
http://forums.spybot.info/blog.php?b=14

Look at method 1. If you can get the machine to get to the "loading personal preferences" window again, you may be able to edit the machines registry from your sons laptop.
All info for this is on the method 1.