This action script library supports all of the major simpleDB features such as: signature version 2 authentication SQL-like queries http or https connections

requires the as3crypto lib. found here: http://code.google.com/p/as3crypto/

a brief tutorial illustrating the library's usage can be found here: http://www.cafesilencio.net/blog/simple-tutorial-for-using-simpledb-actionscript-library