no mouse during FC4 test3 installation

[William Kwan]

Hi all,

I just put FC4 test 3 on a Powerbook 12" 1.5GHz model.  During
installation and after the first boot up, the trackpad doesn;t work. 
Plug in an USB mouse and it works.  Any pointers on how can I get the
trackpad works?

Thanks in advance
William