CTRL+ALT+DEL does NOTHING *REGEDIT*

I had tried to install an Antivirus program and now Ctrl+ALT+DEL is will not
do anything. I tried to right click on the taskbar, and the Task Manager is
"grayed out" and I cannot open it.
I tried to go to Start, Run, and type regedit and press OK.
I got an error message that says: regedit is not a valid Win32 application.
I went to my Windows folder and can see the regedit application in there.
I clicked on it, and it said another program was using it, when I had all
other programs closed.

http://www.claymania.com/removal-trojan-adware.html

"jcurtis138" <jcurtis138@discussions.microsoft.com> wrote in message
news:04F71D31-B098-4190-A4EE-1E8D254EB184@microsoft.com...
>I had tried to install an Antivirus program and now Ctrl+ALT+DEL is will
>not
> do anything. I tried to right click on the taskbar, and the Task Manager
> is
> "grayed out" and I cannot open it.
> I tried to go to Start, Run, and type regedit and press OK.
> I got an error message that says: regedit is not a valid Win32
> application.
> I went to my Windows folder and can see the regedit application in there.
> I clicked on it, and it said another program was using it, when I had all
> other programs closed.
>