Barbie, that's a Driveshaft. If the Universal Joints are bad, they can be replaced, they were drilled and had plastic injected in them to retain the bearing caps. Would be much easier/quicker/cheaper to pay someone to replace them (U-joints) if that's the only issue, if it's bent, that's a different story. If you're close to a large city, look in the Yellow Pages for a place that does driveshaft work, they could probably make a new one pretty quick. Salvage yard is another option, you might even be able to Google to see what other Models would interchange.

ETA: Speedy G beat me to the punch.