Upload Images

Background:

1) Using DataAssist to set up an online store front.
2) Have created the Admin pages and the Public pages
3) Using CS4, php, MYSQL
4) MYSQL has an image field with the following data structure: [BLOB - 0B]

Need:

1) Add an image to specific rows

Tried:

Email and digital file management states:

"Universal Email's File Upload behavior is the most common of the File Manipulation features found in this extension. Here you can specify upload restrictions, determine where the file is stored, and what file types can be uploaded."

Using the instruction here I have created the file upload field and button.

What I don't understand is creating the file upload field and button does not indicate (a) where the image is to be store and (b) how the image will be coded to show up on the update, insert or results pages associated with DataAssist.

What part am I missing?