VB6 MSCOMM wroks on one PC and not another

[T.Jackson]

Thanks for the responce. Input Length is set 0.
If InputLen should be something other than 0 please let me know. The input length is variable, no telling how many characters.

For Win XP & 2K2 you definitely want InputLen set to anything other than 0. I lost some hair a few years back when I wrote a piece of software for a serial io controller, worked fine on 9x with InputLen set to 0, but refused to work on XP until I changed it to equal 1.