That's exactly what I did, but it still saved it as a .txt file. There's a separate drop-down menu Encoding and the options are ANSI, Unicode, Unicode big endian, and UTF-8. ANSI is default. Should I select any of those?
No, you shouldn't have to change it. It should be ANSI. I don't why it's not working for you.
Let's try a different route. Do you have your folders options set to Hide extensions for known file types? If so change that by
Open Folder Options by clicking the Start button, clicking Control Panel, clicking Appearance and Personalization, and then clicking Folder Options, click on the View tab find the option for Hide extensions for known file types. If there is a check in that box click it to uncheck it then click ok.
Now go back to notepad and after putting in the info for the batch file do a save as and give it a name like Clean Cache and leave everything as default so it saves it as a .txt file.
Now find the file you just saved and right click it and choose rename. Replace txt with bat and hit enter and that should have you set.
I know it's a long way around to do it but I'm not sure why it's not saving right in notepad for you but this should take care of it.
edit: Looks like wednesday21 beat me to it.