To use this code library, you'll need to have a good grasp of the S3 and SimpleDB APIs and be reasonably proficient with VBA. This is not an end-user tool, it's for VBA (or VB6) developers. There's a README and some basic examples within the Excel VBA project to help you get started. Code is released "in the spirit" of LGPL, you can use it how you wish, but if you add something new to the "library" (or find/fix a bug) do let the rest of us know.