Asp Ajax Extensions Beta1 and web config

Do I need to make any changes in my web config to use the new Asp Ajax Extensions Beta 1?

Everything worked with the last version.

Thanks

have you seen the migration guide that's posted on this page:http://ajax.asp.net/default.aspx?tabid=47

this is the link to the guide:http://ajax.asp.net/files/Migration%20Guide.doc