I already downloaded source code for the class and read the sample code. There's this line: "objMonitor.RegChanged += New EventHandler........" But why can't the Intellisense display the RegChanged event in my application? I opened the RegistryUtils class and looked at the RegChanged Event. It was declared as Protected and I changed it to Public declaration. But things just went the same, I still can't display the RegChanged event when I hit Ctrl+Space after the object name. What did I do wrong?