So im making sort of a customizable flash shopping cart and i need some advise

Hey everyone,
Im working on a website for a company that specializes in creating custom sound proof boxes for recording and whatnot. The actual site is done completely in html and the shopping cart is html. You can see how i have the thing layout out here:
[COLOR=#333333]http://www.globalstudio.com/clients/gk/index8.htm[/COLOR]
So they are supposed to have the option to completely customize a soundbooth in flash.

Step1
Involves has them pick out the size of the box. If its 4x4 or 8x12 and so on.

Step2
They have to pick the color of the box.

Step3
They drag and drop Windows(They can only place 2 and only at certain spots)on the box.

Step4
They pick where the door goes by dragging it and dropping it over the box.

Step5
They pick where they want the ventilation box.

And then its done.

Now once they have done all of that it takes that sound booth they have created and exports all the data to the html shopping cart ready to purchase.

Now this is pretty complicated for me since I have a pretty basic understanding of actionscript. I just got up too speed on variables for goodness sake a little while ago. And im just not sure where to start. Would i be using strings for all the variables so that depending on what option they click on its storing the information that way or arrays or what? Any tuts or things you think i should read up on to help me would be awesome im just not sure where to start.

Thanks very much,
Chris