[TxMt] Open a specific file with a certain keystroke?

[Marius Hofert]

Dear Textmate Users,

I am working on a Mac OS 10.6.1 with textmate version 1.5.7. I have a  
specific .txt file on my Desktop which I frequently open to put in  
some text. How can I define a keystroke/key combination such that this  
specific file is open and shown on top of all other open applications?  
Is this even possible? If so, is this a Mac-kind-of-thing or can this  
be achieved with textmate? With "System-Preferences -> Keyboard ->  
Keyboard Shortcuts" I could not get this to work.

Cheers,

Marius