Have an office network with two computers - server/host is XP; client is Win7. Both share a key program called Mall Sales Manager which has been installed on both. Can view program on each but am unable to record any transactions on the Win7 program getting a "file is in use by another process" msg. Have tried Unlocker and Process Explorer with no results. The Win7 version sees everything done on the Host but just can't add anything to it. Have made sure file sharing, network discovery etc. is on on the server. Any suggestions wwelcomed.