I had an old PC which I gave up to buy a new one. I moved all software onto the new one. What I did not realise at that time was that the license for a specific software was using the hostid of the old PC and is failing to start in the new machine. The maintenance period for the vendor has expired and I am getting no responses from them. I read somewhere that this can be solved by changing the hostid of the machine. Searching the web was not very helpful as solutions are available only for changing hostid in the UNIX environment whereas I have Windows 98. Can somebody tell me a way to modify the hostid of my new PC to that of the old one?