Amazon released a C# Demo for FPS, but not a VB.Net one. Since VB.Net is my preferred language, I converted the C# library to VB.Net.
It would seem that Amazon will probably continually release new versions of the WSDL in C# - to avoid having to convert it every time and to make future upgrades easy, I wrapped the WSDL in a seperate DLL. In the future, all that will need to be done to upgrade it is to replace the WSDL source file in the DLL project and rebuild.
This isn't a download and run project - FPS is much more complicated than that. Once you extract the zip file, make sure you follow the instructions in the ReadMe.txt file - there is much to do!
My release notes, follow-ups and any questions/comments about the port here on my blog: http://www.phil801.com/wpblog/2007/08/08/amazon-fps-library-for-vbnet/