Yes, WAT and RWAT work, but Microsoft will De-Activated every time they decide to (visit you), announced or un-announced.
So my Question is WHY would you want to use some program that MS does detect, does de- activate when there are some MANY
VERY GOOD PATCHES, CRACKS, or Activators that PASS KB971033, PASS - WGA, PASS Genuine Validation, PASS Auto UPDATE and you have NO WORRIES. .
You know that SP1 will have KB971033 plus other methods to De-Activate your system.... so again I ask WHY would you want to use WAT or RWAT.