go here
http://desktopengineertraining.com/islaptopThe script uses some of the below to determine if its a laptop
' one of the more reliable determinations of a laptop
If PortableBattery and PCMCIAController Then IsLaptop = 1
' a little more strick than the criteria above
'If PortableBattery and PCMCIAController and SODIMM Then IsLaptop = 1
' override with your specific list of models if nothing else works
If LaptopModel Then IsLaptop = 1
' A little looser criteria
'If PortableBattery and PCMCIAController Then IsLaptop = 1
' Chassis is a mixed bag, it's accuracy varies widely
'If LaptopChassis Then IsLaptop = 1