Connect to another system in a network

I am developing an application which reads data from a file on other systems. I am able to connect to the ot开发者_开发问答her systems by changing the ipaddress in the web.config file. I want a proper strategy where I can connect to the other systems in the network by entering the ipaddress/name of the other system in my application rather than changing the ipaddress in the web.config file everytime.

I am using: vs2008 asp.net

I would appreciate if someone could help me out?

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Create a WCF web service on the other system that opens the file and streams it back to your application.