Don't bother you'll probably send it back, everyone does.

So much so that as of yesterday motorola discontinued them!

Hi Bluesky,

I'm not aware of any way you can block withheld numbers on the handset.
I can't find any information in the manual although it may be an idea
to contact Motorola directly.

With regards to diverts, page 75 of the manual tells you how to alter
your divert settings, although this is just for changing the number of
rings (5, 10, 15, 20, 25 etc) before it diverts to Voicemail and
mentions nothing about diverting individual numbers.

You can forward your calls to a different number on Vodafone by using
the following command:  * * 2 1 * (insert the number you want to
forward to here) # send. However this would apply to all calls made to
your mobile number and there is no way of breaking the calls down into
different folders as far as I'm aware. To cancel Call Forwarding you'd
need to use # #  0 0 2 1 # and send.