Need a website like:

Hello all, I would like to make a website like ([login to view URL]) This should be almost exactly like the website where I can add pcs that are premade for sale and allow for users to customize the item with the type of motherboard/CPU/Video cards that I allow. This should allow me to add options onto each category or pcs. Please play around with the site/go through ordering a computer and see the steps before bidding!