"One button" no-ring solution?

Is there a "one-button" no-ring solution for the V3 RAZR?  By that I mean 
one button you can click on that will permit the phone to ring only for 
entries in the phone book?

If there is, it's cleverly hidden...or I'm not clever enough to find it. 
I 
want the phone to not ring when someone "unknown caller" or that's not in
my 
"friends & family" list calls.  I'm tired of answering while underway and 
then having to fish for a pencil & paper and such...  Those that I don't 
really care to hear from s/b able to leave a message and I can get back to

'em if I care to...

Any hints would be most appreciated...


Best regards,
Dusty - tired of sales and marketing calls...