You are asking quite a lot here for someone to do all this for you - there are an awful lot of commands involved to do all of this.
As you have your process document and know the steps needed then work through each one in conjunction with the NetBackup Commands Guide : http://www.symantec.com/docs/DOC5182
The main commands involved will be nbemmcmd, nbdevconfig, bpstuadd
Hope this helps - maybe someone does have the free time to do all of this for you but i have my doubts
Why not simply use the GUI?
If you are not a consultant who needs to do this on a daily basis at multiple sites, I really don't see the need for commands and/or scripts.
I bet even Mark (who is a consultant and has configured this more than any other person that I know) is using the GUI. It is only a couple of short steps and clicks...
It will be nbdevconfig to do it but i haven't pinned down the latest command for it yet
This tech note indicates a new -setreplicationconfig switch but not many details and it doesnt recognise it on my 7.5 system
You will have to keep digging or hope someone from Symantec has access to the latest commands