To do this, open up the command prompt by clicking "Start" then searching for "cmd."The command prompt icon will show as "cmd." Right-click it and run as administrator.In the command prompt, type in the following command...
"psexec \\* ipconfig /all > c:/output.txt"
PSEXEC will display a message telling you that it is enumerating the domain. This may take a while!
Once it has finished, a text file called output.txt will appear on the root of the C drive containing the ipconfig settings of every windows machine on the domain.