Leopard on X86 System

Hello,
I'm new here and I was just wondering if I could run Leopard OS on ether system in my sig.

I really want to use it on my laptop ( runs Xp just fine)
Specs are:
Dell Latitude X300 @ 1.4 ghz Intel Mobile
512 mb Ram
DVD Player
20 Gb HDD

And What about this system
Intel E6850 Core 2 Duo
DFI Lanparty 680i LT
2 Gb's G.skill DDR2 Pc-6400
nVidia 8800 GTX

No, its against Apple's EULA and discussing it is against the Forum rules.

Mac OS X will only run on an Apple Mac, you cannot buy and install it on a generic computer.

Why I was going to buy a Single User License ?