web_store.setup.db
==================
Below the line: $sc_order_script_url = ...
add:
$sc_product_image_url = "/productimages/";

To your database definition, add another field for imagetype, eg:

...
$db{"image"}       = 4;
$db{"imagetype"}   = 5;
$db{"description"} = 6;
...

After the line: $sc_db_index_of_price     = $db{"price"};
add:
$sc_db_index_of_image     = $db{"image"};
$sc_db_index_of_imagetype = $db{"imagetype"};

data.file
=========
Add another field to your database file, with one of the following options
for each
product:
image/thumb/text/(blank)

web_store.cgi
=============

Seek the section:
   if ($display_index == $sc_db_index_of_price)
      {  
      $temp_fields[$sc_db_index_of_price] =
        &display_price($temp_fields[$sc_db_index_of_price]);
      }

Add immediately afterwards:
    if ($display_index == $sc_db_index_of_image)
      {
        if ($temp_fields[$sc_db_index_of_imagetype] eq "image")
        {
          $temp_fields[$sc_db_index_of_image]="<IMG
SRC=\"$sc_product_image_url/$temp_fields[$sc_db_index_of_image]\"
ALT=\"Product
image\">";
        }
        elsif ($temp_fields[$sc_db_index_of_imagetype] eq "thumb")
        {
          $temp_fields[$sc_db_index_of_image]="<A
HREF=\"$sc_product_image_url/large_$temp_fields[$sc_db_index_of_image]\"><IMG
SRC=\"$sc_product_image_url/$temp_fields[$sc_db_index_of_image]\" BORDER=0
ALT=\"Product image\"></A>";
        }
        elsif ($temp_fields[$sc_db_index_of_imagetype] eq "text")
        {

$temp_fields[$sc_db_index_of_image]=$temp_fields[$sc_db_index_of_image];
        }
        else
        {
          $temp_fields[$sc_db_index_of_image]="";
        }
      }
 

And that's it.