Talk to your IT folks and ask to set up a share that only certain people have
write access to (but eveyone in your group can read from). Put your files on
that share.
I think anything else you try will not really help that much.
If you mark the file as readonly (using windows explorer), the file can still be
deleted. But the user would get a warning before deleting it.
Until you have that share set up, make sure you keep a back up in a safe
spot--so you can put a fresh copy out there.
