[TxMt] editing the ctrl-click / right click context menu?

[Matthew Anderson]

Is it possible to add entries to or edit the menu that appears when  
one right clicks or control clicks in the text editing area of the  
TextMate window?

I'd like to see a "Look [highlighted word] Up in Dictionary" command  
like that found in Safari / TextEdit / Mail / etc under Tiger.  I  
know that there is a TextMate (applescript) command mentioned on the  
wiki which can do something similar with a key equivalent, but I'm  
used to the consistent interface to do this across these other  
programs, and I'd love to have the same interface in TextMate.

Thanks!

--
  Matt Anderson