Okay, just checking. You didn't list your burner in the thread, and when you mentioned that you tried to use HD-BURN on different recorders it sounded like you might be thinking it should work on any burner.
If you have the Optorite then Nero ought to automatically configure itself to give the HD-BURN option. I'm not sure why it didn't, but there are a couple of things I can think of that you might want to try.
First, exit all Nero programs. Then edit the registry and open up the key "HKEY_CURRENT_USER\Software\Ahead\Nero - Burning Rom\Recorder\OPTORITE DD0203". Write down the value of the named value "MediaTypes" and then delete this named value. Start Nero Burning ROM and it should restore the MediaTypes named value. Check to see if the new value is different than the old value and, if so, see if you can now select HD-BURN.
If that doesn't work, then you can manually enable all burning modes by editing the named value "bShowAllCompilationTypes" in the key "HKEY_CURRENT_USER\Software\Ahead\Nero - Burning Rom\General". Change it from 0 to 1. Again, do this with all Nero programs shut down, otherwise your change won't stick. Now start Nero Burning ROM, and you should see HD-BURN in the drop-down list above the compilation types and will be able to select HD-BURN-Video:
Note that this second method is a bit of a hack, since it will display all compilation types for every drive you have, without regard for whether or not the drives support all those modes. The above screen shot was taken with my old Yamaha CRW-3200EZ selected as the recorder, and it
definitely does not support HD-BURN.
cfitz