WCF / ASMX :: Toggle Between Prod And Test Web Service Without Changing Web.config?

My web.config is set up so that I don't have to change anything between deploy from UAT and Production. I can determine what machine it is running on and then programatically pick the correct connection string etc from the web.config based on the name.

Now we are adding a call to a web service which now causes us to have to make a change at deploy time. We set a "Region" flag in the web.config and then in coded an IF statement to call the appropriate webservice based on the flag so all we'd have to change is the "T" to a "P" when moving to production. But then hardcoding a web service in the application is not what we want to do. Nor do we want to change the web service address in the web.config.

Is there any way we can do something like the following to be able to not have to change the web.config at deploy?

It would be something like:

1. Grab current Machine name

2. Look in web.config for corresponding machine name web service reference (like we do for connection strings etc)

3. Use that web service in the processing.