Got link? (very important -- here is one)

I say forget it, and here is one reason.

Should I go xml over http, soap, or xsl?

Huh?
Simple Object Access Protocol: (SOAP) A minimal set of conventions for invoking code using XML over HTTP.

What Perl modules should I use? ... There are no Perl samples with the Amazon sample kit so ....

for the first one, visit CPAN like How to RTFM says, and for the second one, you don't need any. SOAP is SOAP regardless of the implementation, so the API is the same, and it has to be documented (there is probably an article on SOAP at http://perl.com).

MJD says you can't just make shit up and expect the computer to know what you mean, retardo! I run a Win32 PPM repository for perl 5.6x+5.8x. I take requests. ** The Third rule of perl club is a statement of fact: pod is sexy.