Bela has developed some terrific tools for VFP now and in the past. If I remember correctly, the problem with trying to get the CPU serial number [and depending on it for copy protection] comes with PIII and later CPUs where you can turn off access to the SN thru the BIOS settings.

>Go to http://www.bbControls.com and search for bbSerNum activex, I thing you can find examples on Foxpro for this. (This only works for Intel Pentium).
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>If you go to Download section on this forum, check "serialno" (ID 9805).
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>>Is there any function or API library that returns the Serial Number of the motherboard or Hard Disk ?