If user like features of Mac OS X but prefers to stick with Windows, its can Transformation will make Windows look like OS X. User can change the appearance of whole system, including the login screen, icons, wallpapers, sounds, dialog boxes . Here are simple methods.

2. If you use the default Windows desktop, chances are that you
could use a "look and feel" overhaul. The Mac OS X desktop is
widely considered to be cleaner and more intuitive. Some simple
changes can have your Windows XP desktop looking like a Mac OS
X in no time at all.
Method 1:
Installing MaComfort Choose the path, then click Next.
Click on Finish to complete the setup.

3. In Settings, choose your keyboard hotkeys and other options.
Method 2: Installing a Dock Using RKLauncher
Right click the desktop and go to"Arrange icons by" and
uncheck "Show desktop icons". You should now have a
completely clean desktop. Don’t be afraid. You can still access
the My Computer, My Documents, and Recycle Bin
from Windows Explorer.

4. Install RKLauncher. You should now have a bar on bottom of your
desktop.
Hide your Windows task bar. Right click on the
task bar and choose Properties.
Click on Auto-Hide the Task Bar, and select
OK.

5. Tips
If RKLauncher doesn’t work well, an alternative to try is RocketDock. RocketDock is updated
more often, and has more themes to choose from.
If you have enough money, an easier way would always be just to buy your own Mac, of
course.
If you want to bootscreen, sound scheme and whatever, you should try Flyakite OS X.
For the simplest way, install this patch. It lets you access Windows XP's built in skinner. Then
go to customize.org and download all the Window’s themes you want.This is a great OS X
style theme.
Since installing OS X on a PC is illegal, you could also try installing Linux (Ubuntu Linux is the
most popular Linux out there) on your PC. Since Linux is fully customizable you can use this
guide to make it look like OS X.
You can also use the OS X Install DVD