Cant see the mapped drives

Oh, starting to get it all working on SBS and falling in love with this
product!!

Next problem to overcome is... I cant see the mapped drives in the 'my
network places'. I can see my computer and domain, and under that, my
computer, but not the main server or the drives/folders I have shared
on it.

But it cant be anything complex like different domain names or
anything, becuase I can use the network printers, browse the web, run
the company web thing - just cant see those mapped drives.

I am sure it is something simple and obvious, I am just stuck and has
missed something.

.