The Automatic Wireless Disabler Daemon (AWDD) is a simple and unobtrusive Windows® application that will disable your wireless adapter when your system is connected to an Ethernet network.
Currently, AWDD is a development build. Additional user interface niceties need to be added before it will be in a release state.
Comments and suggestions are welcome, as are additions to my small codebase. If you try a release build, I would appreciate any and all feedback and/or constructive criticism. Keep in mind, though, that this is far from a release version of the application.