Thanks for the advice. I'm following along with the walkthrough like you suggested. I'm stuck at where I'm inserting new data into the EM_META_TABLE. I think I have the object_id and meta_key correct but I'm not sure how to pull the correct meta_value.
I'm using a radio field with only two options (yes/no). In the walkthrough, the checkbox form is given values of the variable $style_id, and this variable is added to the meta_value of the new table entry. Since my radio field has two options with values of "yes" and "no" I don't have a variable to plug in using the INSERT TO command.
I think this is more a generic programming block for me than an EM problem, so I am not expecting a lengthy step by step explanation of what to do. If it's short and easy to show me how, then great. Otherwise if you could point me to a good place to find how to solve this issue, I would be very grateful.