al seguente indirizzo potete trovare un tool di registrazione dei vostri PlugIn per il CRM 4.0 http://code.msdn.microsoft.com/crmplugin
rimango sempre dell'idea che il miglior tool è quello sviluppato in proprio,  ma questo che vi segnalo è ben fatto. 
Complete feature-set of the tool: 
    - Register a pluginassembly, step and image. Validates the data before sending to CRM 
- Update pluginassembly, step and image 
- Unregister a pluginassembly shall cascade unregister all the children 
- Enable, Disable a step 
- Auto retrieve all CustomEntities information from the organization when registering the step 
- Allows setting more values on step (e.g.: configuration, secureconfiguration, filteringattributes, etc.) 
- Auto retrieve CustomAttributes on entity when registering images 
- Search the pluginassembly, type, steps, images by names 
- Visualize the status of the CRM Organization multiple views
    
        - View by Assembly : What steps are registered on what plug-in 
- View by Entity : What steps are registered on an entity(e.g.: contact) 
- View by Message : What steps are registered on a message (e.g.: create) 
 
- Shows the list of Microsoft Dynamics CRM 3.0 callouts registered in the organization 
- Work with multiple organizations at the same time 
- Exports the Xml in the same format that can be accepted by PluginDeveloper tool