1. File > Import
2. Select Plugin Development and Plugins and Fragments wizard, and press Next
3. On the right you can see EVERYTHING in the uDig SDK
4. Select a plugin that is similar to what you want to do:
   net.refractions.udig.catalog.world.image
5. Press Add
6. Press Finish to the plugin(s) into your workspace

From here you can hack away:

• If you keep the plugin with the same name it will be used INSTEAD of the uDIG SDK entry
• Or you can rename the plugin and use it as a good starting point for your own work