http://support.microsoft.com/default.aspx?scid=kb;en-us;870617

That article explains how to change the NUMBER of licenses, not the licensing MODE (Per-Processor to/from Per-Seat).

(it is stated in the KB article:

'Note In the SQL Server...

CHANGING SQL SERVER 2000 LICENSING MODE

This is not supported by Microsoft.

Whatever you do is your own fault.

This is for informational use only.

1. REGEDIT:

Change this value to '1' (this unlocks...