MacBook Warranty Issue?

Hey all, I brought a macbook (the old version of the white plastic kind) and I brought a warranty for it. However, I realize that I need a PC for school for the next few years, so I was wondering whether it would be possible to use the warranty to replace my mac with an HP notebook instead of a macbook. The idea was proposed to me by a few friends, but I don't know if it'll work or not. What do you guys think?:

Moved to correct forum, title edited for clarity. Has nothing to do with Windows....

Your warranty is by Apple. Why would you think Apple will let you trade in your MacBook for a HP PC? Sell your MacBook on Craig's List or eBay and use the money to purchase the HP.

I wonder why u wouldn't just use your Mac for school. Almost a year ago I switched to Mac after being longtime pc and just in case I had windows installed from day one. And day one was the last time I used windows I have been able to do absolutly everything without a hitch. I'm sure u would be able to as well.