http://www.ppcgeeks.com/files/smartskey056_119.zip
roly,
The functionality you seek is in smartskey. It's posted on the downloads page and in the Colonel's 3.3 thread. (I pasted the link from the downloads page.)
I used it with Colonel's ROMs but have not installed it since flashing to JBabey's new-core 3.5.4. I don't want to screw up the most stable ROM I've ever had on this phone.