Phone up customer support. I think you can get a seperate 'computer' connection but on the same account. You can then pay your father for this. A seperate account may mean a seperate telphone line and computer connection, so may be better paying father.....
You can have 2 accounts like above but not you have triple play in one room and someone else have it somewhere else.
My house had 2 seperate accounts running in it one for me one for my housemate./ I had to sign a wayleave agreement but was then told this was not possible and the install was illegal.(another phoneline)
I know that we can't do that in Retentions. I wish we could.