Suse 10.1 and hostid

Hello, I use ghost from Symantec to deploy PCs. All is fine expect Maple 10. It need a valid host ID. Each time the pc reboot (pc installed with ghost), the hostid command return a different value. I do the following command hostid >/etc/hostid but the problem is always the same after a reboot. I deleted my NIC with Yast and reinstall it but the host ID is always different. I have the same probleme with 32 PCs who was installed with Ghost. Is it possible to have an unique host ID ? P.S: I am sorry for my poor english :( Fabien