Replying to RAW wont show up on PC

so, pics already uploaded to the dave's ibook... then i go to school to put what i want on computers with good printers... but camera wont even show up on the desktop, so i assume its cause the batterys low... come home, charge it, go to upload shit onto my crappy used-to-be-a-dell PC... but forgot that i changed file types from JPEG to RAW on the camera. now all my computer picks up while browsing files on the camera are the old JPEGs but the RAWs are nowhere to be found. any help?