microprocessor's Mhz with APIs

Hi !!!
I'm trying to detect if a microprocessor is a Pentuim II or Pentium III;
and the most important ..... how many Mhz it does?
The API GetSystemInfo doesn't return this information.
I don't know yet if it's posible access to this information. Windows doesn't do.
Is there any way to do this with API's ?
I would really appreciate any suggestion how to solve it.

If you have an NT system, you might look at <a href="http://www.planet-source-code.com/xq/ASP/txtCodeId.4977/lngWId.1/qx/vb/scripts/ShowCode.htm">this</a> code from PlanetSourceCode...


<a href="http://www.planet-source-code.com/xq/ASP/txtCodeId.22274/lngWId.1/qx/vb/scripts/ShowCode.htm">Here</a> is another one...

"I have a plan so cunning you could put a tail on it and call it a weasel!" - Edmund Blackadder

Thanks !!!!
I'll be try it.