[meg.frank]

Does anyone know how to set a ringtone for numbers that aren't in your contacts?

Thanks!!

[Double_BB_Owner]

Must not be possible if no one has answered yet, but I would like to know also. So consider this a bump.

[Stogies]

Set the ringtone that you want to use for the unknown callers as the default for the profile you are using. Then set a different ringtone for all of your contacts (you have to do them individually). You can use the same ringtone for all of them though.
Only workaround I know :-)