Hi,
Does TFS allow to store config files for different environments?
How would be the best solution to keep the latest version of each environments' settings on TFS?

To keep the example simple, let's say we have an asp.net application and a web.config file.
We have  three environments [development/test/production].
Each developer has three local web.config files for each environment.
They are not allowed to checkin their config files,
since we don't want these files to be merged with MAIN branch.

But to find the latest version of web.config file takes ages [asking other developers, mail traffic...].

We have more than 20 developers with more than 15 applications,
and with each of them we have the same problem, we have to solve asap.

please suggest if you have any experience/idea on the best practices...
Thanks in advance,