I'm got an application that I started out using the registry to store the config files then discovered that isn't the best idea with UAC and moved to app.config. Problem is, that seems to be a big issue with UAC and user rights to the program files folder. What is everyone else using to store user application config information? Oh also, this needs to be store by MACHINE not by user.... All users that log on that computer need to operate the same configuration. Thanks!