Thx for the info. I have one clarification on question 2 above, if you don't mind...
So, I know that clients can have multiple packages, i.e. domains, but those packages wouldn't have separate billing addresses, correct?
In otherwords, the billing information is attached to the client and not the domain or package, correct? If so, it may be that I have plesk set up wrong - for billing purposes anyway...
Jason