I'm looking for a resource scheduling add in, that also includes an
option or function to create a 'master calendar'. Meaning we want to
have calendars for our different groups, so we know their events on any
given day, as well as the standard resource scheduling, and the ability
of a master calendar to reflect all the other calendars. generally
speaking if we want to see what group A has scheduled on any given day
we can look in the group A calendar, if we want to see group B we do
the same, if we want to see what everyone is doing we can open the
'master calendar' and everything in the calendars 'below' it is
reflected in there as well. Anything that would support this?

Also, does exchange 2007 have any drastic improvements in these areas?
We get the MS charitable pricing, so upgrading there might be even more
cost effective.

Thanks!