Just come across a new paper on MSDN on load testing RS2005 using the tools provided in Visual Studio:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql90/html/VS05PLTSQL.asp
Very useful to know for future reference, and I suppose you could take a similar approach to load testing AS2005 too.

Also noticed this paper on SoftArtisans OfficeWriter, which I’ve blogged about before and think is quite a cool tool:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql90/html/SQLSRSandOW.asp