So, the web, and StackOverflow, have plenty of nice answers for how to bind a combobox to an enum property in WPF. But Silverlight is missing all of the features that make this
There is another way to bind ComboBox to enums without the need of a custom converter for the selected item. You can check it at
http://charlass.wordpress.com/2009/07/29/binding-enums-to-a-combobbox-in-silverlight/
It doesn't use the DescriptionAttributes.... but it works perfectly for me, so i guess it depends on the scenario it will be used