dbaechte said:
I  also need a download of Quadrant. I was not able to attend the PDC 2008.

I have the Oslo SDK download, but it does not include Quadrant.
ewstepp wrote  Nov 6 2008 at 11:39 AM 
Linverno & nahid, Quadrant is not part of the Oslo SDK October CTP download. It is currently only available to those who attended the PDC in Los Angeles. I believe that Microsoft plans to make it available, but there were issues that prevented them from making it available in this download.

Quoted from:
http://code.msdn.microsoft.com/oslo

Due to the age of the comment and nobody 'correcting' him the probability this observation is still valid is high.