good luck frank i've looked for it also and can't seem to find one, i still have mine but just wanted a new one, but no luck so far, if i do find one i will let you know.
I don't believe that is anything other than a DB25M to DB25F parallel cable that you can get it any radio shack. They dont show one one the web site but. This is what you want. They usually have them in stock at the store. Here is a reference of what you need. Basically a printer extension cable.