GPL does not talk directly to your modem. It uses TAPI, Windows'
standard API for talking to modems. So, no, there is no core.ini
option that will do what you want. But if you know the init string you
need, I suspect that you may be able to get Windows to do it for you.
(On Win95; translate, if necessay, on Win98)
Open up Start->Settings->Control Panel, and double click on Modems.
Highlight the modem you intend to use for GPL, and hit Properties.
Select the Connection tab. Now hit Advanced. Enter the init string to
force X2 settings in the Extra settings area. This should cause this
extra init string to be used when you use this modem.
If you're paranoid about Windows doing what you asked it to do (I
usally am), also check the "Record a log file" box. Examining the
commands that are sent to your modem can be educational, and
horrifying. Remove the modemlog.txt file from c:/windows, if one
exists, so you can be sure you'll see commands that were sent after
your change.
Now start GPL and try to either host, or connect to, a multiplayer race
using the modem. Exit GPL. Now go look at c:/windows/modemlog.txt and
see what's in there. Was your extra init string sent to your modem?
Were the proper init strings to disable error correction sent (assuming
you have this turned off, and you should)? What other options were
sent to your modem? Do they all make sense? If not, maybe add more
stuff to your init string to set things to the way you want.
Randy