It should be:
@@recordsetproductid@@ . "-".$letter.".jpg"
and you have to replace @@recordsetproductid@@ with the actual recordset column reference for your id column.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.