I am having issues with this too. I have a heap of largish electronic manuals that I need to keep on the Storage Card. I want them to to sync the the Vista Mobile Device Center File sync folder. In my case "Loggers Docs on TyTNII" This way I can edit the docs when the Kaiser is not connected and changes I make will sync to the device.
Has anyone come up with a solution for this? Seems ridiculous that one can have a 8GB memory card cull of documents and none of them syncing!