I threw this together in the matter of about 5 minutes (so it is not very pretty - but it works). Feel free to modify it for your application. The hex address is for the printer port lpt1 on my machine - check in windows device manager (go to control panel-> system-> device manager) under the properties of the lpt port to get the hex address for your printer port.
hope it helps
Pblue wrote in message news:firstname.lastname@example.org... > > Does anyone know of a labview vi that can set the individual pins on a parrallel > or serial high or low?