How to get your custom map to work with customkeys.txt

[Bawbz]

Hello,

I would like players of my map to be able to use customkeys.txt to change the hotkeys of custom units, abilities, upgrades, etc.
I tried getting this to work today but it seems that any custom object that I have set a hokey for that is different than the base object's hotkey will override the customkeys.txt file.
I did some searching and I know that Warcraft 3 Dota has customkeys.txt files that work, so it must be possible. I saw some mention of widgetizing a map, but I'm not sure exactly what that does.

Could someone explain to me my options? Is there some way I could allow users to specify a customkeys.txt file that will work with my map? Is there something I need to do to my map to get it to work?

Thanks,
Ogre_Bob