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It is possible to install Mac OS X on your Windows PC. A small software package called PearPC emulates the Mac hardware on your PC. You can even install many Mac programs

1.Decompress the PearPC archive into a directory such as "C:\PearPC".
2.Create your ISO file from the Mac OS X 10.3 installation CD 1 using your favorite burning/ripping software. You can find documentation at the software's website for creating ISO image files.
3.Save the ISO file to the PearPC directory as "macosx10.3.iso".
4.Install the PearPC Control Panel and start it up. Click "File">"Create Virtual Hard Drive". When the window opens, under "Hard Drive Size", move the slider till you get the virtual size you want. 3GB is plenty to install the operating system.
5.Click "Browse". Browse your way to the PearPC directory, and save the HD image as "MacHD3GB.img". Once you've done that, click "Create Hard Disk".
6.Click "File">"New Configuration File" with the PearPC Control Panel. A Wizard pops up.


7.Now that you're looking at the Wizard window, click "Continue". Next to "PearPC Specifics", click "Browse", and find "ppc.exe" which is in the PearPC directory you extracted it to. Use which ever one of the icons you want to.
8.Under "Primary IDE Device", click "Browse", and find the hard drive image we just created, "MacHD3GB.img".
9.Under "Memory Size" move the slider to how much virtual RAM you want Mac OS X to have. You can get by with 128MB, but 256MB or 512MB is better. Its ok to set this higher than the amount of actual RAM you have installed in your computer.
10.Click "Continue".
11.Under "PearPC Additional Options", set the video mode you want. If you are using 1024x768 with Windows, you can you can use it for PearPC. You must pick "32" for the color depth. There is a small bug in the PearPC Control Panel, that if you pick "16", PearPC will not start. For "Video Driver", put either "video.x", or the full path to the file, which should be "C:\PearPC\video.x". CPU PVR should be set to "G3". That's the PowerPC processor you going to emulate. Even though you can pick "G4", don't, PearPC won't work. Leave "Fullscreen Key Combo" and "Mouse Grab Combo" to their defaults.
12.We're not going to setup Networking with this howto, so leave "Enable Networking" unchecked.
13.Leave everything else on this window the default. Click "Finish".
14.On the last window, enter a name for this PearPC configuration. Just name it "Mac OS X Panther". For location, leave the filename pearpc.cfg, but save it in the same directory as PearPC, which should be "C:\PearPC".
15.Click "Finish".
16.Unfortunately, the PearPC Control Panel isn't perfect. We need to make a small change to the pearpc.cfg file we created with it. Open My Computer, and browse to your PearPC directory. Open the file "pearpc.cfg" with Notepad. Add these 3 lines to the bottom of the file (without the asterisks):
◦pci_ide0_slave_installed = 1

◦pci_ide0_slave_image = "C:\PearPC\macosx10.3.iso"

◦pci_ide0_slave_type = "cdrom"
17.Save the file and close Notepad.
18.Now its time to run PearPC and install Mac OS X. Double-click the "Mac OS X" icon in the PearPC Control Panel (or whatever you named it). This starts PearPC. You'll be given a couple options on which drive to boot from, the HD, or CDROM. Choose CDROM.
19.Mac OS X 10.3 should start installing itself. When prompted, choose to format the HD. THIS IS NOT YOUR ACTUAL HD, BUT THE VIRTUAL 3GB HD.
20.Follow all the instructions. Once Mac OS X 10.3 has been installed, you're done! You can now run OS X at any time by running the PearPC Control Panel and clicking the Mac OS X icon. From now on, choose HD instead of CDROM. Once the OS has been installed, you don't need to select the CDROM ISO again.

Source:WikiHow