Solaris 9 Installation on Sunblade 100

I have a sunblade 100. It is preloaded with Solaris 8 but I do not have root password. I want to erase and install Solaris 9 on it. What are my options?
I have a CD ROM. Could any one help me in getting started to install in from CDs? Appreciate your help guyz.

boot cdrom - install

from the ok prompt.

How to reach OK prompt?

press Stop+A ( both stop and a at the same time )