I have just started learning Microsoft Dynamics 2011 online and while I ran the Quick Start sample code provided in the SDK, it threw me the following exception [In the image]
Metadata contains a reference that cannot be resolved: …
The remote name could not be resolved: …

This tool expects the address of the Discovery Service. As it looks like you would connect to the APAC data-center, you have to specify
crm5.dynamics.comIn total there are three Discovery Service endpoints for Dynamics CRM Online
Note that the complete path has to include
/XRMServices/2011/Discovery.svcand has to start withdev(the tool adds this automatically).See http://msdn.microsoft.com/en-us/library/gg328127.aspx