SBS 2003 to SBS 2008 R2 upgrade

There seem to be several ways of migrating SBS 2003 to 2008 R2.  I am looking for recommendations from people who have studied the alternatives and have actually implemented one or another of the upgrade methods. One area, I am particularly interested in is the Exchange portion.  The current network is approximately 15 - 20 user.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Which is it?  Your title says "SBS 2003 to SBS 2008 R2 upgrade" but there is no such product as SBS 2008 R2.  There is an SBS 2008.  And there is a Server 2008 R2.  But no SBS 2008 R2.  (A service pack does not make it an "R2").
Swing Migration from Jeff Middleton.  It's no cakewalk.  But it's better than doing it on your own.  Definitely comforting that there is a quick contingency plan if you are running late and need to bring everything back online.

Used a laptop with VMWare as a temporary DC.  Swung from existing SBS2003 to a new server.  After migration was over, wiped & re-purposed the old SBS2003 server for other services.

I think Jeff is here on Experts Exchange somewhere.

I'm a satisfied customer.

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lineonecorpAuthor Commented:

SBS 2003 to SBS 2008. How did you do it?
Lee W, MVPTechnology and Business Process AdvisorCommented:
I used the Microsoft process a few times.  Each time I had an issue with the initial install (AD Replication if I remember correctly), but nothing show stopping.  Unfortunately, my last migration was months ago and it's not fresh in my head.  I would suggest Jeff Middleton's kit though - he also provides support and considering the time savings it should afford, the price should be well worth it.
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