DOS ectract iso image

[DarkFlare9x]

ok i ripped my first game ######## star online ver2 i was left with track03 thats all. i then extracted the file using winzip. When i double click on the image the discjuggler screens pops up . ok when i went to dos mode i typed in extract track03.iso and a message came up:
ERROR:track03.iso is not a cabinet file
where did i go wrong?
should i delete the image then try ripping ### ver2 again?? what do i do????