A 30-day fully functional free trial version of CodeEnhance can be downloaded for evaluation. In order to register CodeEnhance there is no need to install another version, simply enter the serial number provided after purchasing a license.
During installation you can select the versions of Visual Studio for which CodeEnhance will be installed. Note that after starting Visual Studio for the first time and opening a C++ file, CodeEnhance will build it's source cache database. The source cache database is used for performance reasons and is built for each version of Visual Studio for which the software is installed.
If you already own a license for CodeEnhance and are within the 1-year free upgrade period, the installer will update your current version to the newest one.