Getting Autoexec to bind controls once

[skadoomer]

I've got an autoexec file that re-binds doom's standard controls to a more modern WSAD format. The problem with autoexec though is that I'm unbinding all commands and manually re-binding them to eliminate all non necessary keys (this is to help some beta testers with what is a necessary control and what isn't). The problem is if any of them change the keys to something else, its get over-ridden the next time they launch zdoom. Does anyone have any suggestions of how to get autoexec to re-write the default commands if a user doesn't have a config, but ignore all re-binds if they do? I didn't see any indication that If / else statements are supported in the console, but is there any way to do something with eval?

[Siggi]

If you're shipping your mod bundled with a copy of ZDoom, then you can include your own custom copy of zdoom.ini.
zdoom.ini is what is loaded when no config is found, so on the first run all its settings will be used instead of ZDoom's defaults.

[skadoomer]

Is there is a pullin command like there is for wad files to make loading a configuration easier, or am i limited to specifying the file at startup?