hi mate, welcome to the wonderful world of DSLRs! I shoot raw and jpgs. I use the jpgs as thumbnails for the raws. Flick through them quickly in any image editor (for some reason the thumbnails for raw files dont seem to work on my computer in windows expolrer) and when i see a pic i think is decent i open the raw file, work on that, and save it separately as a jpg.
you need an upgrade! my computer using old windows vista shows the RAW file as a thumbnail image