Remote datasources in SSMS custom reports
Currently only locally accessible data is available in custom reports hosted in SSMS (by locally I mean the instance/database you are connected to in Object Explorer). I'd really like to be able to pull in data from other sources hosted on remote servers such as MOM 2005 or other monitoring sources to provide a rich reporting experience within SSMS allowing the ability to combine current data with historical/aggregated data. If this sounds like a feature that you would like to see then
vote for my suggestion on connect.