^^ Text editor? LOL!!!
A driver is a compiled C file, so essentially its a program. Of course its garbled. You cant modify it like a .ini settings file. You need to use a hex editor like iHex or Hex Workshop, and you need to know the right offset to modify the file. Also, you need to modify the checksum in the file's header so that windows wont reject it as a corrupted file. Finding those offsets need debugging skills. You're better off searching google for your version's connection and checksum offsets.