klutch, I use a pair of short ramps to do the oil change. much easier than jacking a car up and safer! I doubt you can do an oil change without lifting it. Here is a good example of what I use:
http://www.autozone.com/servlet/UiBr...ETCD%7C%7Etrue
I think I got mine at WalMart for about $24.99. Any auto parts store will carry them. Just keep in mind the load capacity! Don't buy cheap molded polyurethane ones! If you have more than 1 car, figure out which is the heaviest (check inside the owners manual) and buy a set that will hold the heavier car. The Camry V6 has a curb weight of 3485lbs. The I4 is a little lighter.