>I created an application that can create, save, and open custom files of the extension .env.
>
>I can set the default program that opens when I open the file in Windows Explorer through the Windows GUI, but I would like to create a .bat file that does this for me. Does anybody know how to do this?
>
>Edit: Sorry about the title... somehow the second half got cut off.

Check Re: Associate my program with file extension in Windows Expl Thread #1182620 Message #1182630 (the second link).