One follow-up to newtron's solution:
There you'll find a file called Info.plist. This is an XML property list that stores all sorts of information about the app.
Open the file with your favourite text editor. I recommend Hydra, but TextEdit will do just fine.
Save the file, and close it (or quit the editor).
You can't save the edited .plist if your account doesn't have the correct permissions (the issue I'm dealing with now--even at admin status you won't have read+write permissions over some files and folders...). To save changes to the .plist files you need to give your user read+write permissions.
Some of the default Mac applications make this difficult to do and I'm currently searching for a solution (will update) to do this with TextEdit.