I know this is a web language mainly forum, but I'm posting this on the off chance anyone knows how to do this.

I'm trying to create a C# based solution for Product Key changing for Vista - atm it runs via WMI, which is NOT ideal, as WMI has a huge "delay" associated with it. I'd prefer to make this somehow using the Win32 API (WINAPI) or any other lower level method that would make it faster (WMI can only execute 2 changes / sec at best).

Yes, I know I will be losing the WMI remote computer functionality, but I can think of plenty of methods of implementing a similar system myself, my main problem is not using WMI.

MS only have documentation for the WMI way- http://www.microsoft.com/technet/windowsvista/plan/volact2.mspx