How to disable PDA connections to avoid error message?

My HP5555 running Winpilot opens a pop-up error that I have to
manually close every few minutes in flight. "Unable to connect: You
have no modem entries created, and no network card present".
WP runs fine, just the error window blocking my view. GPS input is a
VL to SN10 to PDA, also working fine. I've already RTFM (96 pages),
it has many items on how to connect, but none on how 'not to connect'.
The blue tooth connection is disabled, but it's looking for a modem or
internet (?). I've tried every connection item in the menus and
settings, (except of course the one I need). Does anybody know where
to find the elusive setting? Appreciate any help, Thanks! Bruce Barnard