>Do all users access the same config file or is it per user? Does it get updated when the run the application or only once after installation? I know I've asked lots of questions. Just trying to get a handle on it to give some suggestions.

Currently all users use the same config file, so I might move it to the shared user folder. The config file gets updated both automatically through the application and also when the user makes changes in the options form, so it is updated when the app runs.
I am glad you are asking questions. I am new to Vista development and the biggest problem is that my development machine is still XP. I have access to one Vista PC for testing but I usually feel like I am behind on testing and customers contact me with issues before I can get them tested on Vista. Any sugestions are welcome.

Einar