Total Amount field and add Checkbox label to total

Hey There does anyone know a way to do this?

I am trying to combine multiple selected checkbox amounts to the amount field which is hidden on the page,

Here is the page: http://www.iacc.org/non-member-conference-sign-up

Also i need the admin to show the text next to the amount that someone selected so the client knows what they bought.

Can anyone help?

Please