JackBMK,
The script goes into your cgi-bin folder.
If you don't have one, just create a directory, preferably outsidee of the XOOPS root. Call it cgi-bin and chmod it to 755 or 777, depending on what your server allows. Create an index.html file and upload it into the directory.
Upload the Amazon script apf4 folder into the cgi-bin folder.
There are specific instructions on his site concerning which files need to be uploaded as ASCII files and which need to be uploaded as Binary files. I usually set my FTP program to Auto Detect - haven't had any problems yet, but I thought I'd let you know.
Once the files are uploaded, open the apf4 folder.
The should be two .cgi files: apf_config.cgi and a second .cgi file called (I think) apf_amazonproductfeed.cgi.
Chmod both of them to 755 or 777 depending on what your server allows.
Type
http://name of your path to cgi.com / cgi-bin / apf4 / apf_config.cgi (omit the spaces) in your web browser to set up your preferences. You'll need to create a password.
If you see an "Internal Server Error" page, change the chmod settings on the cgi files and the cgi-bin folder.
Once you're in, everything in that section is pretty straightforward.
Next, type in the web address for the second cgi file. (I renamed mine to shop.cgi to make it easier to remember)
If everything went well, you should see a basic directory of all the available Amazon categories.
Click a link or do a search to find the categories that you want to display on your site.
Copy the url of the page you've decided upon using.
Create an HTML page with an i-frame inside of it. Set the i-frame's width to 100%, height about 2000 to 2500 px and frameborder="0". Set src= to the url that you just copied
Upload the HTML file you just created into the "content" folder that is inside the Content module.
Go into the Content module's "Add Pagewrap" section and set up the page you uploaded.
You may or may not need to resize the height of the i-frame.
You can create and add as many pages as you want.
Hopefully, this will help a little bit.