diff -r 0cdf98b4e6f6 j2eeserver/src/org/netbeans/modules/j2ee/deployment/plugins/api/InstanceProperties.java
--- a/j2eeserver/src/org/netbeans/modules/j2ee/deployment/plugins/api/InstanceProperties.java	Fri Feb 29 18:11:55 2008 -0800
+++ b/j2eeserver/src/org/netbeans/modules/j2ee/deployment/plugins/api/InstanceProperties.java	Mon Mar 03 12:06:45 2008 -0800
@@ -251,6 +251,7 @@ public abstract class InstanceProperties
      *             instance does not exists
      * @throws InstanceCreationException when instance with same url already
      *             registered
+     * @see #removeInstance(String url)
      * @since 1.37.0
      */
     public static InstanceProperties createInstancePropertiesWithoutUI(String url, String username, 
@@ -262,6 +263,25 @@ public abstract class InstanceProperties
         return ip;
     }
 
+    /**
+     * Removes the given server instance from the JavaEE server registry,
+     * making it unavailable to JavaEE projects.
+     * 
+     * It the responsibility of the caller to make any changes in server state
+     * (e.g. stopping the server) that might be desired or required before
+     * calling this method.
+     *
+     * This method is intended to allow server plugins that registered a JavaEE
+     * server instance via {@link #createInstancePropertiesWithoutUI(String url, String username, String password, String displayName, Map initialProperties) createInstancePropertiesWithoutUI} 
+     * to remove those instances later.
+     * 
+     * @param url the url connection string to get the instance deployment manager
+     * @since 1.41.0
+     */
+    public static void removeInstance(String url) {
+        ServerRegistry.getInstance().removeServerInstance(url);
+    }
+    
     /**
      * Returns list of URL strings of all registered instances
      * @return array of URL strings