[CentOS-virt] KVM network bridge setting on centOS

I have a server that will be hosted in IDC. The Server have 2 network interface card. I would like to set one for host os itself. and the other network interface card as bridge for guest OS. Because I have 3 IP address that will allocate to host os and guest os.

The host OS will be centos 5.4. I need ideas about how to set host OS's network. Could anybody post a workable network seting for me? because the Centos Wiki page seems out of date about this part. and also I googling a lot, but most instruction in the internet seems out of date too.

B.R. Rewing