Hi - Brand New Member - Advice wanted

[RollieNZ]

New Year Greetings fellow forum members from a foreign newbie -

Wondering if you kind people can help me out.
I'm considering my first Rolex purchase and am after some guidance.

First off -
Is a Cellini actually a Rolex? :)
I only ask as I've done many searches on this forum and can find few references to them.

I'm looking at either of these two watches (both on ebay):

http://cgi.ebay.com/ROLEX-CELLINI-NE...item45f05517c8

http://cgi.ebay.com/MENS-18K-WHITE-G...item414bac8738

Also tried Googling but haven't had much luck finding too much about the 4136 Model in particular.

Any advice, information as to quality, price value, manufacture date, honesty of sellers would be greatly appreciated.

Many thanks in advance,
Mark