Sun cluster 4.0 - zone cluster failover doubt

Hello experts -

I am planning to install a Sun cluster 4.0 zone cluster fail-over. few basic doubts.

(1) Where should i install the cluster s/w binaries ?. ( global zone or the container zone where i am planning to install the zone fail-over)

(2) Or should i perform the installation on both. (Global zone and container zone).

(3) Can i have the cluster installed only in the zone and not the Global zone.

Kindly clarify the basics for me.
Thank you...

Thx,
NVA