If it is not there, you
can add it by opening System Preferences. Here are
three different ways to open them:

Locate the Mobile Me
icon:
Click on it, then choose
the "Sync" tab. There is a checkbox in the lower left
corner of the window. When there is a check in that
box, the Sync icon will appear in your Menu bar.
If you click on the icon
in the Menu bar, it will look like this:
If it is in the process
of synching, it will look like this:
If there is a problem,
there will be an exclamation mark in the middle of
the icon and the problem will be noted in the box
(Sorry--I forgot to capture that one!)
So, what's with the Option key?
Hold it down while clicking on the Sync icon in the
Menu bar and you see this:
There is a lot to explore
here! I am particularly interested in Sync
Diagnostics… and Reset Sync Services…,
but it's time for me to get busy. Check back soon for
more Snow Leopard secrets and try holding down that
Option key while clicking on more of the Menu bar
icons!
--Pat