Default [Q] Venue 8 and 360 Controller?

Anyone know how I can get an xbox 360 controller to work with the Dell Venue 8 using an OTG cable?

My brother has a nexus 7, plugged his in and presto, worked immediately. Apparently my machine doesn't have the appropriate file in /system/usr/keylayout and there is no way to paste the key file into the folder without permission.

Anyone know a workaround?