>>See http://www.berezniker.com/content/pages/sql/microsoft-sql-server/retrieving-sql-server-edition-version-and-service-pack-info
>
>Thank you very much, this is exactly what I was looking for. Just minutes before reading your message, I also thought about the same. Based on the edition I have, it makes sense that I was not able to install what I downloaded.
>
>The funny part is that I downloaded a 1.5 GB file earlier today and when I go back on MS site, the only thing now I see is DVD edition which are way over 4 GB. Is it me or they just removed the non DVD editions from the site this afternoon?

Last time I checked a few month ago they all were ISO images. Don't know about R2.