There are many Articles around the web that describe how to install OS X on a normal PC.
For starters you may find this thread on im to be useful, there are many others. showtopic=109102 Hi and thanks for the guides, I installed Kalyway 10.5.2, then the dual boot with Windows XP. Then i followed the above steps to upgrade to 10.5.3, and after the restart when I try to boot on OSX (with any of the ‘-x’ or ‘update -v’ options above), the PC just restarts without even trying to launch MAC OS… I don’t think I am a real developer but I do like programming and have programmed for several years and I find the fun on using my own developed apps on my own i Phone.
Everytime I tried to open a Get Info screen, Finder would crash. What I ended up doing was booting into the install DVD, then opening up Terminal under the Utilities menu and editing the file in there. I followed your steps i had kalway 10.5.1 installed on a dell latitude D620 it loads fine when i updated to 10.5.2 by following your steps it restarted and ten restarted again and was updated I tried to update to the kalyway 10.5.3 comboupdate and follow the same steps but there was no Apple Intel CPUPower in the /System/Library/Extensions/ and there was no /System/Library/Extensions/Dont Steal Mac OS on eather time i looked for it but I did notice that it already said /System/Library/Extensions/on the first update but the second neather one of those was listed when i tried to do the 10.5.3 update.