I have a cd image on my computer that i am trying to delete because it
is corrupt and take a bunch of space. I once mounted this image using a
program that I have since deleted. I can not delete this file because
it says it is in use.

I have gone to msconfig and shut down everything I can think of
rebooted the computer and tried to delete it.
I have restarted the computer in safemode without networking and tried
to delete it.
I have run windows disk check and tried to delete it.
I have searched the windows registry and deleted all references to it
and tried to delete it.
I have gone to the windows task manager and shut down a lot of process
and tried to delete it but frankly I left some stuff alone that I did
not recognize.

How do I find the process that is using this file or correct windows
erroneously thinking this file is in use?

Thanks

Michael