Do you have to buy CALs (Customer Access Licenses) for SRS reports when using DRM?

If you are on SQL Server 2000 and not 2005 do you have to buy CALs (Customer Access Licenses) for SRS reports?

Recommendation:
It is our understanding as long as SRS and SQL Server are running on the same box then there is no extra charge for SRS and no need for CALs. Depending upon what you may or may not have installed, the CAL requirements may differ.

NOTE:
You will want to verify any licensing questions with Microsoft prior to purchasing DRM to print SRS reports.