On client Outlook, no exchange server (home machine). I am trying to share my
calendar online, but allowing my wife permissions to add to it. Basically, we
want to be able to have the family view a single calendar.

I publish the calendar and my wife can see it, is restricted to read only.
She can't add to it.

I looked all around and can't seem to figure out how to change the
restrictions. In properties of that calendar, the permission fields are
grayed out. In the email the calendar send out it tells me the calendar will
be restricted, but say this,

"This calendar is shared with restricted permissions. To preview or
subscribe to this calendar, you need to enroll the e-mail address to which
this e-mail message was sent with a Windows Live ID™ account."

Where and how do I enroll this. I have a Live ID account. It should work.
Help, what am I doing wrong.