I Posted this Hello World Article on Atlas (of-course, now called "Microsoft ASP.NET Ajax") on Code Project a few months ago. Recently, I've been receiving multiple emails / comments telling me that the article was helpful but I should think about updating it since Atlas is undergoing a lot of changes (including the name:)).
I've spent some time during this weekend to update the article based on the Beta 2 of Atlas (Microsoft ASP.NET Ajax 1.0) and resubmitted it to CodeProject for updation. It should be up there in a day or two.
However, if you're looking for one single zip which allows you do download the latest copy of article, and source code, you can get it here. All further updates on the article will be posted here.
Thanks to everyone who read the article and commented on it.