Changing Datasource in Crystal Reports 2008 within VS 2008 in webconfig file

Hello,

I am using the Crystal Reports that is packaged up with Visual Studio 2008. I have everything working very nicely locally, but when I went to put it on the server I realized that I have a major issue! The database that I am using locally is not the one that we use on ther servers, so I need to change the datasource. I need a way to change the database from within the webconfig so that our customer only has to change one line in the webconfig for everything to work properly. Does anyone know how to do this? I do not want to have to put all of the database fields on every time I move the application to another datasource!

Thanks!