>I´m trying to read the serialnumber from VFP5 but I have come to a stalemate. I´ve tried using the Sys(), the GetVolumeInfo, but unsucessfuly... can someone throw me a line on this?, thanks

What problems did you have with GetVolumeInformation()? Q139547 in the MSFT KB (see? I can too reference articles that I didn't write. :-) should work for doing this.