meh. You probably could have taken a lot of what you had (burner, mouse, video card, XP Key, case, power supply) and threw the $450 at some good RAM, mobo and CPU and built yourself a screamer.
I don't know why everyone thinks they need to buy a new OS every time they get a PC. You buy the key, not the OS. Just use Magic Jelly Bean and re-install it on a new machine.