Up2date RH9 to AS

["Chiu, PCM (Peter) " <P C M Chiu rl ac uk>]

I have recently updated a RH 9 box to RH EL 3 Update 2.

Actually, it is a fresh installation, on a separate partition from RH 9.
The machine name and address however remain the same.

I then tried to use "up2date --register" to put my machine profile to RHN
so that I can obtain updates from it.

I then realised that during the registration process, my machine profile
is described to be Red Hat 9, and not Red Hat 3AS.

The profile is registered on RHN, but a subsequent up2date will return
the system is fully up to date, and no updates are done.

I tried to check on the RHN, remove the entry, and register again, but
no joy.  There doesn't seem to be a way I can alter the machine profile 
to reflect its base operating system.

Does anyone knows how to do that?

Thanks.