starting Places->Networks at command line

Hi All
I have UBUNTU 10.04
I would like to run at command line the gui application that I use for finding network places and navigate shared folders or network driver.
I mean the one located under menu PLACES->NETWORK
I tried using "nautilus" but you need to know in advance which IP to give and this is not the case.
Can you help me? Is there this command line or should I really lunch from the menu panel?

Kind Regards
Mnstn

nautilus network:///

It say "Nautilus cannot handle network locations" and this message below.
The point is that If I run the software from the graphic panel on top ( under menu places ) it works.

Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.