I would like to create a Setup Project for a component that will be installed into an existing website directory. The component relies on configuration data in the web.config file, but I would like to avoid having anyone alter the web.config file manually. Is it possible to setup the installer to merge a new web.config file with an existing one, so that preexisting configuration is unaltered? If so, how?
If that's not possible, then I thought I might roll my own app to do specifically what I need. If I did that, how might I get the installer to execute my app instead of just extract it?