database and new templates

[Birdie501]

Hi,

how can I do that?

I want to add some fields to the vbulletin database. These are for example to save informations about a product we sell. (serial, price, name, weight, etc....). Ok what I need is a form where i can enter these fields (admin cp) and then i want to display this fields by calling a new php file. (products.php). The variable for calling this product should be the id.
products.php?s&productip=1
all informations for the product are shown.

Who can explain what i have to do? You don't need to do it, just tell me step by step!

this informations should also be available for non registered users!

Thanks a lot!
Birdie501