UPDATE: April 2011
I was trying to use this page recently and realized it was out of date.
I have corrected it enough to make it work but there are issues.
ORIGINAL PAGE BELOW
I wrote this page after I first learned of Amazon.com's Web Services. I've left this page and the script that goes with it up for your experimentation.
It is very crude and was thrown together in bits and pieces as a way for me to test my other AWS projects. It is not elegant, but I think it works in most cases. As a matter of fact, I still use it when I want to see the raw XML AWS returns.
Have fun.
P.S.
I have another old form that posts directly to Amazon.com.