How to disable/customize the Visual Studio Conversion Wizard window when opening a solution file created by previous version Isolated Shell app

Currently I worked on a project which is an Isolate Shell application based on .net framework 3.5 and Vs2008, and the application can create solution file defined by ourselves

Then the project was upgraded to VS2010 with .NET 4. After that, theVisual Studio Conversion Wizard window will be shown automaticallywhen I try to open the solution file which is created by the previous VS2008 application,so I want to disable this window or customize it, how to do this?

Thanks in advance!