My 2000 millenia has a fuel tank that has cracked at the side seam. is there a way to repair this because the best price that I can find for a new tank is 1200.00. I dont know if the car is worth much more......help

It can be repaired for cheap. You need a tube of Seal-All and some toilet paper. Don't laugh, this really works. The Seal-All can be picked up at the auto parts store or a hardware store.
Clean the seam off with a steel brush to get the rust and loose dirt off. You don't need shiny bare steel. Wipe it down with some window cleaner. When dry, put a coat of Seal-All over the whole area and let it almost dry. Put on another coat of Seal-All and then dab a layer of toilet paper into the wet Seal-All. Let it dry and repeat this again. After 2 coats put a plain layer of Seal-All over the whole patch and you are good.
If you aren't sure then you could also use a product called JBWeld. It's a 2 part glue that should also do the trick, but it does need bare steel to do it's best job.
Hope this helps.