Hi there. Thanks for the effort but I have determined there is no way to repair this problem. The only solution was to reinstall W2KPro on another partition, leaving the originals intact. Then backup all the files possible, and then reformat and reinstall.
1. Remote login would have been the optimum solution, however there are no services installed to setup or configured to allow remote logon. Besides the security hive is locked down so a registry repair would not be trivial to my knowledge. It probably wouldn't work.
2. The Recovery Console did allow access to the system however it only allows the trivial commands present in the RC system, hence any tools that could have helped (NTrights, fixing the registry) could not be performed.
3. This anti-solution was the only recourse. Reinstall.
Thanks for the suggestions folks this one was a toughie. Unfortunately no solution solved the problem.