Hi, I had similar woes about not being able to remap the controls.
Currently the only means to do this is to edit one of the game files which is contained in the dat files, or to get a copy of this file. Since new players in no way deserve to have to decompres the game files,
here's a copy of the text file you need to edit.
There is a much better method for doing this later on in this thread, from lorant, I suggest you use the txt file above as a reference point to get the command names for any you wish to change and use his method
If all else fails, or things don't behave how you'd like, using lorant's method, your only alternative is the below, I think.
Create a folder in your multiwinia directory named data, then another in that called input, and place the above file in that folder, to follow the scheme below;
somefolder/multiwinia.exe
somefolder/data/input/input_preferences.txt
The majority of controls in this file are irrelivant to you, you probably want to edit the "cameraleft" looking controls, left, right, up down shake it all around etc.
OR ALTERNATIVELY, A rar with all the input related files can also be obtained
here, which can just be extracted to the multiwinia dir. You might find this a lot easier.
Note however if the controls get updated you'll need to get a fresh copy of this file out of main.dat - main.dat is secretly a rar (just like in Darwinia) so just rename it, extract it, and name it back if the controls ever get updated. Hopefully by then youll be a little more confident or not have to do this - who knows. Right now, though, you should be able to sidestep with the files provided above.
(Thanks go to Jelco for hooking me up with the latest copy of the file)
edit - as an aside, there DOES appear to be special keyboard options for French and German keyboards, I'm not sure if these are azerty or not. However I have no idea how to make use of these options in game, if they're automatic, or what. Hopefully the above will provide you with a simple enough means to at least start playing comfortably.
edit 2 - elDiablo suggests that these options are automatic, with apparently no way to manually select them. I'm not sure if they're being automatically selected for you or not (the theme of your posts suggests that they aren't)