MSMQ in Windows XP

Hi,
I am dealing with migration of Windows Nt desktops to Windows XP, the
machines are still using NT directory and are scheduled to be migrated to
Active Directory later on. Microsoft Messaging Que component is not
something that we used to install on the desktops. But what I noticed is
that it contains a component for Active Directory Integration. So what I
wounder is whether we need this component for migration to Active Directory
and should install it now so that we do not have to run additional instal of
MSMQ later when Active directory will need migration.

Also, a wounder if we can install only Active Directory Integration
component of MSMQ or we need the install of the whole MSMQ.