Leading on from this post, and this post, I created a SharePoint Solution/Feature combo to update Web Application web.config files with the changes neccesary to support;

• .NET 3.5 SP1
• Ajax Control Toolkit
• Microsoft Data Vizualization Chart Controls

The Web.config changes don’t require that you have Ajax and MSChart installed on your WFE’s so you can deploy the solution even if you don’t need the Ajax/MSChart stuff.

Alternativly you can modify the Visual Studio/WSPBuilder solution and change it yourself to remove those bits.

Download the Visual Studio/WSPBuilder solution here, or download just the SharePoint WSP here.