Software Deployment

I was hoping someone could point me in the right direction w/ the custom maintenance wizard in ORK 2003 on how to change the global catalog server. I've been dialing through the options but nothing seems to be jumping out at me. I don't need to change anything else w/ our installation so i think i need to leave all the other options in the CMW as not configured? Also are there any write ups free or not free that cover ORK tools?

Thanks