My environment is Vista Ultimate 32 bit, with IIS & ASP.NET already configured for VS development.
You need to install Sql Server 2005 SP2 AFTER including the Reporting Services component in the original Sql Server installer (this can be added separately, but you still need to run SP2 again as it updates the Reporting Services)
Next you must remove an extra slash from the ‘AboMapperCustom’ Handler entry under the ReportServer site from within IIS Manager.
ie. C:\Windows\Microsoft.NET\Framework\v2.0.50727\\aspnet_isapi.dll -> C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_isapi.dll
Run the Reporting Services Configuration Manager and ensure that the virtual directories & database is setup correctly, do so as required
Verify permissions to the rsreportserver.config file in the ReportingServices\ReportServer directory under your Sql Server installation (I took the sledgehammer approach and added ‘Everyone’ for Read/Execute permissions)
That was enough to get me up and running! 🙂