Alright...this might be a little hard to understand, but I'll try to make it as easy as possible.

http://www.directamish.com/orderform.htm

What you will see here is just a form that has a javascript to do addition and subtraction and keeps a running total at the bottom of the page. I want to keep this part of the form, but I want to add some things to it and I'm not sure how.

At the very top of the form, I want to have, say, Package 1, Package 2, Package 3 for example, all three in radio buttons. Below that, I want to have a list of options, quite a few of them, all with check boxes, or maybe sections of radio buttons. What I would LOVE to setup, is a way for a user to select a Package at the top first. When they select that, a base price is put in the total price at the bottom, and the checkboxes are automatically selected that are included with that package. So for example, if Package 3 was $1000, and had every option, I would want them to select Package 3 at the top, $1000 go into the total, and all of the checkboxes become selected automatically since they are all included in that package. Then the customer could go down and make changes to the options that would reflect on the total price at the bottom. Anyone have any idea how I could do this? Thanks

Chris