Setting "group" ringtones

[Tropicseed]

Hi -

Is it possible to set ringtones for groups of contacts? Specifically, I would like to have a ringtone for incoming calls from anyone not in my contact list. It would also be nice to be able to set ringtones for groups, eg faves, family, work, etc -- but I don't know whether you can even have groups of contacts.

Further, is it possible to have incoming calls from anyone not in my contact list be forwarded immediately to voice mail?

thanks
patrick