AJAX fun with the dreaded 'sys is undefined' error

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If you have started to play with AJAX then you have most likely come across the dreaded 'sys is undefined' error.  I found numerous articles on how to get this working but the best ones all point to making sure you have the correct entries in your web.config.   So to summarize what I have read:

1)  Go to C:Program FilesMicrosoft ASP.NETASP.NET 2.0 AJAX Extensions{your version of AJAX}

2)  Open the sample web.config file and make sure you have the same entries in your web.config

3)  If you don't then copy and paste is your friend :)

4)  See if the app works now

 Here are a couple of articles to assist if you are still having issues:

Chris Riccio's blog   https://weblogs.asp.net/chrisri/archive/2007/02/02/demystifying-sys-is-undefined.aspx

Lorin Thwaits's blog  https://geekswithblogs.net/lorint/archive/2007/03/28/110161.aspx