Hyperlink in silverlight

[AndrewNeedham]

Is there a way to show hyperlinked photos within the ArcGIS Viewer for Silverlight, either by a behavior add-in or by changing code.
I am using ArcGIS 10.1 and ArcGIS Viewer for Silverlight v3.0.0.91. I know this can be easily done on arcgis online but I need to use Silverlight.
Cheers

Update: I have tried the fix from this thread
http://forums.arcgis.com/threads/56839-Hyperlinks-in-viewer?highlight=hyperlink
Two issues the file path has changed with my version and if I click on the link nothing happens
FYI Path for me is: C:\inetpub\www2\Apps\YourApplication\Config

Is there code that will display the image/photo within the pop-up as (below) does not work for me as a link
<esriMapping:FieldInfo Name="Field3" DisplayName="Field 3" FieldType="Hyperlink" AliasOnServer="Field3" DomainSubtypeLookup="None" />