The URL is http://support.intel.com/support/processors/procid/

I have just tried the following and it works just fine on my 266 PII Compaq notebook.

declare integer cpurawspeed in cpuinf32.dll integer clocks
declare integer cpunormspeed in cpuinf32.dll integer clocks

? cpurawspeed(0)
266

? cpunormspeed(0)
267

Thanks
Neil.