Purchasing SBS 2003

Dear Experts,
I am having trouble finding SBS 2003 CALs...vendors are trying to sell me SBS 2008 with a SBS 2003 CD saying that I can install 2003 and use the 2008 License. Anybody heard of this? Is this supported by Microsoft...I can't find it on their site anywhere.
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That is correct.  You can use the 2008 CALS for previous versions.

See this link from Microsoft:


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Q.  Since SBS 2008 has two CAL types, "Windows Small Business Server 2008 CAL Suite" and "Windows Small Business Server 2008 CAL Suite for Premium Users or Devices," how does the CAL downgrade to SBS 2003 (R2) work and what are the access rights granted?

Since SBS 2003 (R2) has only one CAL type, when you downgrade either of the SBS 2008 CAL types you will get SBS 2003 (R2) CAL. SBS 2003 (R2) CAL grants access rights to both Standard and Premium editions of the SBS 2003 (R2) server.

So if you have premium now you don't need to buy 2008 premium cals, standard will work.
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