Hi Jeff and welcome to our forums!
Thank you very much for one of the best complements we got so far, we really appreciate being able to make this much of a difference to you!
Regarding your question, I would strongly recommend creating a custom cell with a UITextField, then adding static UILabels before and after the UITextField, containing the symbols you want. For detailed examples of creating and using custom cells, please refer to our "Custom Cells App" sample application. If you feel you still need more help, I'd be happy to give you some code and a nib file to help you quickly get started. I'll just need the relevant code you have in your view controller's implementation file.
Thanks again!