I am hoping that somebody can steer me in the right direction here. I have been utilizing an application I built in Visual Studio that does some remoting between Excel (client) and another application. It utilizes the Worksheet Selection Change event to send data to the server. However, as of late I am not allowed to use the application in my workplace because they don't want users to compile or install there own apps. However losing the functionality really stinks, as it was a big help in my everyday job. I am however able to write macros in Excel. I would like to port the functionality over to one of my Excel workbooks. Can somebody tell me how I might do this? Please let me know if you need any extra information.