setting price based on size

Ok, I am very new to this, but I am having trouble figuring out the attributes and where to do it.
This is basically what I need to do.

I have a product EX) called Fancy Buttoned Coat
I want it to be able to choose First the colors..

(Radio Button)
Red
Orange Blue
Green
Black

THEN CHOOSE The SIZE, but each size option is a different price that needs to be reflected in the cart if chosen.

So.... (Radio Button)
Small: $10
Medium: $15
Large: $20
XXL: $25

In Other words, you go to the product, click the color you want and then click the size. The size though will determine the price.

The other hitch is, not all products will have the same prices and sizes offered and colors offered. When I create the product is there a way for me to choose which colors are offered (from a master list of every color) and choose what sizes are offered for that product and then just fill in the price for each size I offer.

Not sure the best and most efficient way, or if it already exists, how to do it.

thanks for your help

Okay, I know we HATE to take the shrink wrap off manuals, etc. BUT a tour of the tutorials could be VERY helpful.:P

In this case, start with https://www.zen-cart.com/tutorials/index.php?article=57

thanks for your quick reply. it was exactly what I needed.