Subscriber Information Dump has an option that will get you this. The "Caller Input Key Actions" option will kick out each of the keys (0-9, * and #) into their own columns with a text description of what the key is set to do (i.e. "ring phone for call handler 'operator'").
You'll find subscriber information dump in the tools depot on your desktop - but you can download the latest off its home page here:
http://www.ciscounitytools.com/APP_subr_info_dump_3x.htm
