[App_rpt-users] host name for DHCP

Does any linux guru out there know how to change the DHCP client name from TEST? I followed the instruction to use system-config-network and suceeded in changing the shell prompt to the host name I want, but my router still says the node name is TEST. Some internet searching came up with the "dhclient" command - which works - but after the next lease renewal it is back to TEST again. That name must be buried someplace in the linux configuration. Ken