My first post!

I just bought another Apple computer (macbook pro) and tried to add Home Sharing but couldn't as I've reached my limit of 5 computers. I have to figure out how many of my kid's and less used computers are on my HS account.

1. How do I deactivate a HS account on the computer. I don't think simply turning off HS is enough.

2. Does each Apple TV2 count as a "computer" on the HS network? I have 2.

3. Is there anyway to bypass the limit of 5 computers for HS?