Need help on zen 1.38!

I want to set an attribute with radio option, where each of the option got its own offset factor from the base price. But then, when i click on the radio option, and add to cart, i don't want that attribute offset factor to be add up into the cart, but i just want it to be as a choice and remarks display in the cart. I don't know how to make so, if i made it manually as a gift option, it work. But then, i can't have an offset factor from the base price.

Also, i wanted to have the radio option to be made as a general attribute for all the product category, how to made that by not copying the attribute option.

Need help on this...