How to managed zenwork in different forest environment

[k2sls]

Hi,

I need to know what else i need to do to enable zenesm read another AD in another forest. I have 2 forest and both are diffrerent IP and subnet. zenesm server are attach to forest A. For sure everything in forest A are working. Now i need to get zenesm to managed the computer that joining the forest B. How am i going to do that? In between this 2 forest, there is a firewall and the tcp and udp for this both forest communication is widely open. Both of this forest are running windows 2003 AD. Mind to help and suggest on how am i going to get zenesm to managed the forest B computers?