We can't really help too much with that. You will have better luck following another guide or visiting another site. The biggest (physical) problem is hardware compatibility and (meta-physical) being the legal gray area for using OSx on a non-mac machine.
At first glance, you SHOULD be okay. I got it to install on my laptop (Dell 1520). However, there were a few stability problems and it didn't always shutdown cleanly. Surprisingly, photobooth worked out of the box with my camera. However after closing the app the first time, without a reboot, it would crash if I opened it after that.
Try here, there are MANY guides and topics on hardware compatibility.