frmclient_old.frm definition, relationships, removal:

This is a part of a malicious parasite that violates user privacy and damages the compromised system. The frmclient_old.frm file can be used for different purposes depending on the related parasite's type, functionality and carried payload. Although frmclient_old.frm may not take any malicious actions by itself, it ensures that a parasite is working properly and therefore needs to be removed. DO NOT open, execute or edit frmclient_old.frm!
The frmclient_old.frm file is installed and used by Intruder.
Sometimes a presence of frmclient_old.frm does not indicate that your computer is infected. It can be an essential system file or a file installed by harmless legitimate software and therefore may not pose any threat to your privacy and the system. Although such cases are quite rare, you should thoroughly examine frmclient_old.frm before completely deleting or leaving it in the system.