Thread: Where to put a config file

Hi,
I have written a program that needs to access a config file at runtime. THe application will be run on a number of computers.
I am using c# express.

It looks like the application is only installed in the start menu, so where can i put this config file so the application knows where to open it. I dont want to hardcode a path such as c:/config/config.txt , as this may not be a valid path on some computers.

I have tried to use app.config method, but when I change the keys, I get a hash error and cant continue.

Please Help!!!!