Ed Rauh,
Sorry i forgot to give the invoke statement it write in VB. Below is the Invoke statement in VB :

> Out PortAddress, Signal
> Inp(PortAddress)

the first one will past two parameters to teh procedure in inpout32.DLL
the second is get the return value from the procedure.

i also want to ask about the inpout32.dll file, is it only put it in the windows\system directory ?

regard,
chang