Hi,
Very briefly, step are as follows:
1. Setup the BMR Master Server. On Unix, this happens automatically once you have installed teh BMR Master Server, but on Windows, you need to run bmrmss.exe (start->programs->veritas netbackup->bare metal restore master server setup) this will setup your BMR database.
2. Turn on BMR in the backup policy. The BMR Backup policy's backup selection needs to be "ALL_LOCAL_DRIVES". Take a backup. You should then be able to see the client and its configuration in the BMR node in your NBU Admin console.
3. The Boot Server. This is needed only when you want to restore a client. You can install it on the Master Server. For Windows as well as Unix, the base package is different. For windows, you will find the Boot Server base (6.5) package in the "additional products" part of the install launch screen on the left side. So if you didnt install the boot server when you were at 6.5, you first need to do that and then upgrade to 6.5.3.1
4. Then use the boot server assistant (or bmrsrtadm on unix) to create SRTs.
I hope this helps you to get started.
~Amol.