Z Force1 I am sorry for my gruff reply. Do not be daunted by the dashboard. Take notes, use the links posted and make sure to have some little bolt tupperware bins handy so you can keep place them in there immediately. If you are asking about replacing the heatercore, it means you already want to learn. This is a basic skill for owning this care that will server you well down the road. The heatercore is a big item that will need replacing but other items will come up if they haven't already which may also require the gauge assembly coming out and possibly the dash itself. Look for dash pucker near the windshield once its out. If you are unsure what I am referring too then search for other threads regarding how to fix that too. Merry Xmas.
