mouse wheel zoom workaround?

[digitalreject]

ok well lets make it clear yes i have a scroll wheel on my mouse no it doesnt work under linux dont even bother trying to tell me how to get it working it wont ive tried everything under the sun it just wont work now heres my question how would i go about remapping my mouse wheel to my keyboard i dont use the numbpad so it is where i would like to put it i dont care where on the numbpad or how it works as long as i can zoom in and out in the game i tried to find a keybindings cfg in my regnum folder no dice maybe i missed something but if i cant edit the game controls to do this then maybe i can do it in linux itself please help