A few links that may help you out if you are battling the challenges that can occur in an implementation of SQL Server Reporting Services in SharePoint Integration Mode. Most focusing on SQL 2005 as that is the current challenge I am helping someone with.
- Reporting Services SharePoint Integration mode Installation Gotcha – TechBlog
- Microsoft SQL Server Reporting Services – Installation and Configuration Guide for SharePoint Integration Mode.docx
- Integrating SharePoint with SQL Reporting Services (Michael Gannotti on SharePoint+)
- Microsoft SQL Server 2005 Reporting Services Add-in for Microsoft SharePoint Technologies (readme)
On the deploying client, the machine used for creating the reports to be deployed, update to SQL Server 2005 SP2 (client tools at least) for a better (less chance of errors) experience.
How to: Configure the Report Server Integration Feature in SharePoint Central Administration from SQL Server 2005 Books Online (http://technet.microsoft.com/en-us/library/ms157412(SQL.90).aspx)