an invitation ID would be gr8, coz i have contacted the support and they told me msn messenger 8 program can only joined using an Invitation ID.
So i tried the invitation codes provided on neowin and here in msghelp and other forums, all were taken, and used by someone else.
So i dont know who would send such invitations, but hope that we know someone..
so BBmad i think u just need and invitation ID
Regards