If you've got these field values in a combo or list box and they're not value list items (i.e. they come from a query or table) then that means you already have them it table fields. That begs the question as to why you want to store them again in another table or record? Methinks you have an underlying issue.
If none of that matters, you can refer to combo or list box columns by their column number property. Me.myListbox.Column(0) would refer to the 1st column as the collection is zero based.
If what I said might matter, maybe you should post a pic of your relationships window if you have created relationships.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.