can we connect to 2 network at same time in ubuntu 8.10?

[loody]

Dear all:
I install Ubuntu 8.10 - the Intrepid Ibex - released in October 2008.
I find it is very nice that will automatically help me to connect to
the netwok when I plug in wire or wireless devices.
But I find it seems only connect to 1 network at the same time.
In ubuntu 8.04, I can connect 2 networks at the same time.
Is there config I can use to connect 2 networks in Ubuntu 8.10 - the
Intrepid Ibex.
appreciate your help,
miloody