Exchanging money in Japan

HI,
I have researched a lot just now about exchanging money in Japan and where to get the best rate.

1. I understand that post office have a good rate. Do they accept traveler�fs checks in UDS?

2. I also found out on a site where international postal money order is the best way. But what do I put for the address on the PAY TO side? What do I need to bring if I�fm paying it to myself?

3. Big banks seem to give better rate on traveler�fs check. I will be in Tokyo, what are some big banks there that has a good rate?

4. Please feel free to give me any tips you have ^ ^

THANK YOU!!!!!

http://www.2think.org/dollar-yen-change.shtml

Make it payable to yourself. Be sure to have ID on you other than your passport that has your US address and your name on it. Also be sure to have your Japanese address with you (written in Japanese).