Company A has bought part of Company B and has set it up as a standalone company (Company C). Company C has a short (<5months) time to extract itself from Company B's systems. Company B runs Active Directory (W2K) and Company C needs to extract itself off Company B's AD environment, but needs something to replace it. Company A also runs Active Directory (W2K). Company C consists of 2,500 staff using many, many critical systems and a large AD structure inside Company B's AD system. The extraction is being run by Company C and Company A who bought Company C have very little time or budget to accomodate Company C's needs. So, the question is, how would you go about getting the Company C off Company B's AD within the timescale and at minimal cost: Integrate with Company A's AD or set up a separate AD structure... Why?