[CentOS] Advice on setting up Raid and LVM

Hi all, I'm setting up Centos4.2 on 2x80GB SATA drives.

The partition scheme is like this: /boot = 300MB / = 9.2GB /home = 70GB swap = 500MB

The RAID is RAID 1. md0 = 300MB = /boot md1 = 9.2GB = LVM md2 = 70GB = LVM md3 = 500MB = LVM

Now, the confusing part is: 1. When creating VolGroup00, should I include all PV (md1, md2, md3)? Then create the LV. 2. When setting up RAID 1, should I make those separated partitions for /, /home, and swap? Or, should I just make one big RAID device?

The future purpose of using LVM is I want to be able to expand any partitions that would run out of space into a new disk.

Thank you very much.