I believe the only way to do this is to change what type of application it is - background on, or something, for example, although that wouldn't work without modification (that would let you use it without making it 'active', which you wouldn't be able to do).
I'm sure there is a third party app somewhere out there that could block certain apps from appearing...
If not, perhaps something that could replace the app menu entirely and allow greater customisation?
Cipher13
[This message has been edited by Cipher13 (edited 11-25-2000).]