I agree, save time by losing the spaces, Don.

Exten$ = "*.TXT"
OPEN "Go.Bat" FOR OUTPUT AS #12
PRINT #12, "Dir /b " + Exten$ + ">DAFILES.TXT"
CLOSE #12
SHELL "cmd /c go.bat"
SHELL "Notepad DAFILES.TXT"
END

Note: If notepad is your default txt editor, you could also do:
SHELL "cmd /c START DAFILES.TXT"