There's not much I can do for you in regard to this. It's too bad you didn't leave better documentation. Hmm, this is new information, your original post didn't indicate that, in fact it sounded like it was all you. If you are not a programmer and cannot decifer the GWBASIC code then there lies the proble. Perhaps others can help, unfortunatly this is above and beyond where I draw the line on my help. If you are in the northern California area, you can contact my employer: http://jameskring.com and we can arrange an on-site visit. Again, new information not given before. If you can't communicate to the test set using Procomm then of course, LabVIEW will not either. I guess you better roll-up your sleeves, you gotta lot of work to do. I have no clue, without seeing your setup what might be the problem. It also sounds like there is little to no documentation. Again, I'm sorry I can't be more help but there are 4000 other registered board members that may have some idea.