Multi level BOM

Dear All,
I have already started with this thread

http://www.excelforum.com/excel-gene...-material.html

And we realized that it is better create it with VBA codes because it is complicated.
It’s a multi product bill of material that will help me to calculate some properties of my recipe, such as pigment %, solid %, cost price…
What I need is a kind of form that I can use to enter:
Raw material: ready to use material with fixed price and solid content.
Assembly: it is an assembly item with a formula that I must enter and that may include items and assemblies.(here is the problem: assembly in assembly in assembly..)
So, I should start by a form in which I can enter raw materials (item list sheet)
Than another form to enter defined assemblies (formulas sheet)
Than a display page (sheet detailed formulas) which will disintegrate the assembly and make a raw materials formula that I can view and analyze.

NB; the attached file is the result of the previous thread