>Hi Herman
>
>>BTW, is it a software SN or SMART SN? Sorry if I'm wrong, but since I know you as VFP'er, why not just do that from VFP?
>
>This is for a FP DOS app, which needs casual copy protection, nothing heavy duty, it's not worth the effort and anyways if somebody is pirating this app then it is a compliment <g>.

Ahh...FP DOS <g>
Sorry about your problem. Anyway, I have a function to read SMART SN. I can make a small exe (32 bit console) if you want to try. Notes, SMART SN only available on IDE ATA-3 or higher

Regards