1998 Jeep Grand Cherokee • 6 cylinder 4WD Automatic • 150 miles

I have a 1998 jeep grand cherokee and while driving my gears started to slip and the car would rev quite high before getting back in gear. Then while going up a hill I saw white smoke tailing and pulled over. There was a puddle of transmission oil on the ground.I managed to slowly drive back home. The gears seem very suspect and there is a rattling sound when I put it into reverse. What could cause this?
March 7, 2011.

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