Automatic saving of attachments to hard drive

Does anyone know of a way to have groupwise automatically save an
attachment to a local hard drive or a mapped drive? I've looked through
the rules but I don't see anything that would do this for me.

We're trying to create a set of rules, based on the sender and other
criteria in the subject/message, so that the attached file (which already
has been scanned for viruses) will be saved to a local disk or a network
share. There is going to be a large volume of these emails otherwise we
would just do this manually.

Thanks in advance!