Sorry for the slow response on this - and the bad news.
It seems that Google no longer support georss as an output format, see http://www.google.com/support/forum/p/maps/thread?tid=2fd831d021abeb46&hl=en. If I understand it right, they now only support KML - which is a data format not currently supported in the Flex API/Viewer. Support for KML/KMZ is however something we are planning on implementing for our next release.
YAHOOOOO! Thanks Bjorn, I have been wainting to hear that. I have a lot of KML information I need to dispay alongside my GIS Server data, and have been waiting to see if you have a widget for flex to support this. Can't wait!! Thanks....
