Client Computers No Longer see Host Computer

Hello, after two client computers had networking issues with the host computer a user changed the data path from the network drive to the c: on each of the client computers. Is there anyway to change the path back?
Thank you.

After trying to reset the data path back to the mapped drive letter and it failing to fix the problem, I've tried to uninstall and reinstall the software on one of the POS Computers. Ran the setup from the first CD recieved all the yearly updates up to '13. After running the netsetup routine a 'Sorry, your license has expired' popup appears and the program closes. I've tried the runasdate fix listed on the License Expiration Date forum and setting the date all the wayback to '05 and checked the 'use real date after 10s' option and it did not fix the problem.
I'm out of ideas and ready to recommend the store begin migrating to a new system.