Getting dialog to work

[Matheson]

Hey,

I'm still trying to get this stupid dialog thing to work, so I tried to
do this example script.  Unfortunately, if gives me the same output no
matter what the user chooses.  If anyone could help me, that would help
me a lot.  Here it is:

#!/bin/sh
#  Cameron Matheson

DIALOG=${DIALOG=dialog}
tempfile=`tempfile`

$DIALOG --clear --title "Snes9x Options" \
                --backtitle "Super Nintendo" --shadow \
                --menu "Choose the ROM you want to load:" 0 0 0 \
                1 "Final Fantasy VI" \
                2 "Quit" 2> $tempfile

retval=$?

case $retval in
  0)
        if [ "$tempfile"="1" ]; then
            clear
            echo "Hey"
            exit 0
        fi
        if [ "$tempfile"="2" ]; then
            clear
            echo "Bye"
            exit 0
        fi;;
    1)
        echo "Cancel Pressed";;
    2)
        echo "ESC Pressed";;
esac

Thanks,
Cameron Matheson