TXT file keeps turning into a notepad file when i rename it .cfg

Solution
Windows does not let you change the file extension on known file types, you are just renaming the file to X.cfg.txt. Do this: http://www.programmerfish.com/how-to-change-file-extension-in-windows-7/ and you then will be able to change the file extension.
Windows does not let you change the file extension on known file types, you are just renaming the file to X.cfg.txt. Do this: http://www.programmerfish.com/how-to-change-file-extension-in-windows-7/ and you then will be able to change the file extension.
 
Solution