this thread was gone, so here it is again:
to upgrade an older script version to run with the signed request required now by amazon you can follow these instructions: http://www.downintheflood.com/download/ ... pgrade.txt
or download them: http://www.downintheflood.com/download/ ... pgrade.zip (can't remember what's in that folder).
here you can see the script in action as corrected by Chris Labbs: http://www.downintheflood.com/apf4-labbs/apf4/index.pl
good luck!
JoJo1956
