Product Variations

Hello,

I’m using WooCommerce on my website, http://leafpc.org.
I sell computers online, and am looking to achieve a similar interface to that of Dell’s or Apple’s. On my product page I’d like a variation that allows for the choice of operating system, which I have currently. However, I’d like to have more variations, that are available in a different location, such as a separate tab on the product page. I’ve created a separate tab, called “Customize”, and I’d like to add other variations within that tab. Some variations I’d like would be Memory, Storage, Monitor, WiFi Adapter, Keyboard/Mouse. How would I go about doing this?

Here’s the product page:
http://leafpc.org/products/leafbox/

http://ww.wp.xz.cn/plugins/woocommerce/