After looking through the threads here for a bit and fiddling with a few things myself, it doesn't look like you can. You may be able to figure out how to do it with a hex editor. I've been bitten by that at least once, it's annoying...
-DOOMBRINGER-
"DOOMBRINGER, make a parking space IMMEDIATELY!"
"DOOMBRINGER declares it to be SO!"
"DOOMBRINGER, I command you to lay siege to THE ISS!"