Trying to edit .exe files is no easy task. There are some pieces of software that claim to allow you to edit minor details of an .exe file but those files are not meant to be edited as they are not in ASCII text. This means that you can't read them because they have been compiled into binary code. There are also software decompilers available for download but they are cumbersome and, more
. often than not, to buggy to deal with. Read more at http://www.restuner.com/howto-openfile.htm