Cannot go online within Sage.

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Hi, I'm running Sage from Windows 7, using vmware. I am new at this, so I'm following a tutorial and so far everything works out. However, for some reason, I cannot go online using the Firefox in the vmware enviroment. In fact when I start a notebook it says "External network not setup". However I don't know how to set up the external network. I was wondering if this can be fixed.

Also, I don't know if this helps, but I used the vmware player to create a virtual machine running Ubuntu 10.10 and that one can go online.

As far as the Vitual Machine settings in Sage, I have the Network set to NAT, the shared folders enabled and the vmware tools have been installed.

Thanks for any help you can provide.