SQL Server 2000 Reporting Services does use ASP.NET. There may be an issue with the hotfix and Reporting Services (I encountered one). You can find a workaround here:
http://odetocode.com/Blogs/scott/
I had to add the </CodeGroup> closing tag to what was provided and then run IISReset after making the changes.
K. Brian Kelley
@kbriankelley