Hi Lau,

1. Create a skeleton app which all the separation of logic, data and presentation.

2. Build some tools i.e. unit test and code gen around the skeleton app

3. Move your legacy app (business logic) only to the middle tier, connect them to the database with a data access abstraction layer.

4. Recode the UI.

You can use exisitng web app framework such as Paladin, CSLA or even Web Client Software Factory.

 P/S: Why you mention Wood Grove? Woodgrove is a sample WPF application, not a framework per se.