I have a problem with SBS licensing and max users ceiling of 75 and I need to resolve this issue as soon as possible with as little down time as possible. So far from what I have gathered my best option is to use transition pack to move away from SBS. Currently I am running DCHP, PDM, and IAS and of course Exchange on a DELL 2850 box (Dual core I think) Xeon 2.80 GHz with 4 gig ram. Am I correct in assuming all I need to do is to purchase the transition pack and enough licenses and install them on my SBS server in which case I will be running Server 2003 and Exchange 2003 in the same box and if so do you think my current hardware is muscular enough to handle 100 users? How pain free is it REALLY to do the transition and how much down time should I expect?