Sorry it took so long for anyone to answer.
Turn on camera and attach it to firewire port of you computer.
If you use Livestream Studio, when you login to the channel you created you should see a "camera." If not, click on "Activate my local camera" on the bottom left.
Make sure it says DV next to "video sources" or in the pulldown menu select the camera (may say firewire). It may already be selected. Also click on "More Settings..." and make sure DV or firewire is selected under "Mic source" as well.