Use GPO to force file naming convention for users

We have a lot of users who just don't comprehend the idea that they can't have sentence long file names for the stuff they save. We have tried multiple times to educate them on correct file naming convention to no avail.

I'm curious if it's possible to deploy a GPO, or integrate into our existing GPO, enforcement of correct naming convention standards, so that it forces them to rename their file to something that meets these standards when they go to save a new file.

Has anyone successfully implemented this and if so, how would I go about it?

Thanks.