What is 'business networking'?

Hi, all

I notice that the Home editions of Vista do not have 'business networking'.

My only complaint about XP Home is that I cannot connect to my XP Home PC
from my XP Pro PC as an administrator; XP Home always authenticates remote
users as guest, so even though my ID on the XP Home PC is an administrator,
I can't get full read/write access to the C$ share on the XP Home PC.

Does anyone know whether this will be true of the Vista Home editions as
well? Or does 'business networking' mean something different, like being
able to join a domain?

Cheers

- rick