BB for the first time on another line

[#1]

I am thinking of taking my father-in-law into the 21st century and getting broadband set up for him at home as a Xmas present. I was thinking of the £9.99 product to begin with, but am unsure what to do next. Can anyone help me out with regards getting the line "split" (Is it +net or BT that does that?) Must it be done through his pc, or can I order it from my home? What about referral fee for me? etc.
I tried to find a help page for first-time BB users but didn't seem to be able to.
Regards
Dave

[#2]

Hi Bernard,
Think of getting broadband as having an extra digital layer added to your analogue phone line.  BT Wholesale will do that all remotely for your father-in-law (make sure you get the referral for it!).
Your father-in-law won't need to do anything other than plug in his router and filters (which we can supply) and you can order it on his behalf.