Report Builder in June CTP

Does the Report Builder included in the June CTP work?
How can I create a report in Report Builder?
The cmmand File.. New report... said that I don't have a data source...

Also the documentation for Report Builder is pre-alpha, and it is supposed to be beta 3.
Thank you

You can't make a report with report builder because you don't have a model installed in reporting services.
With BI Development Studio you could make a model then deploy it and that's all (New Report Model Project). By the way the documentation for these things exists, you must read and try. The only way I now to learn.
Good Luck.
VectorR3|||In addition to using BI Dev. Studio, you can auto-generate models directly from report manager. The data source page in June CTP has a new button called "Generate model".

--Robert|||Here is a good webcast that will show you everything you need.
http://msdn.microsoft.com/msdntv/episode.aspx?xml=episodes/en/20050531SQLServerCC/manifest.xml

-w