most people would suggest other brands. viper or other types.
if you want to go with toyota, check out ebay. it's about $80 for a remote system which includes shock sensor (glass breakage system).
You can install it yourself or take it to a store.
Installation is not too complicated for a stock system cos you camry should have all the wires ready. I assume that you have central locking in place already.
Here is the instructions for programming a camry 2000 LE
http://www.golfballmall.com/camry/ca...e_program.html