I think i can help
Tell me the names of the viruses
Not trojan or w/e
sometimes it has some weird code or something
(if you get what i'm saying the keep reading)
For eg. "gfdah.exe" is a virus which is a trojan, right?
Try pressing Ctrl+Alt+Delete
Click on the "Processes" tab
Look for the name/code of the virus and end the process
By now you might be able to delete the virus/toribash
You probably got "access denied" when you said when you couldn't delete it?
I had a similiar problem to this
i made a thread about it and yer
Google helped me on how to delete it
(MSA was the virus that i had to get rid of)