He won't know if it's going to work on COM 1 until he gets it.
Also, the majority of MultiProgrammer 3.5 users experience no problems what-so-ever. Running an Elvis programmer with Windows 2000 seems to be the only problem generating setup that I have come across.
I got my elvis last Tuesday and have tried everything but it will not work on com 1 I have even recontacted the supplier and they dont seem to have any answers at the minute either, lots of people seem to disconect their modems but mines an internal on com 2 but elvis is not seen on com 1 for some reasion