From the looks of things, I think I might need to write my own module. What I want to do is accept a file upload from a customer. It can be either attached to a specific product (this would be most ideal; like an attribute) or it could be uploaded on the checkout page.

Lyle says on this page that we should not use the attribute module for this. Rats. That would be my logical starting point.

Here is a thread that gets started that looks like it might do what I want. I haven't tried all the steps yet, but it looks like it ends with problems.

I would welcome any suggestions on how to proceed. Would it be best to start with code described in the above thread? Or start fresh with creating a new module based on new recommendations?