I don't know for you but I love my PC keyboard. When recently being forced to switch to Mac OSX, I had hard times dealing with a Mac OSX keyboard.

Tired of fighting my muscle-memory, I connected my PC usb keyboard but had to do some remapping for it to work properly.

For that I used Ukelele which is a free Mac OS X software.

The result is here.

Put it in "/Library/Keyboard\ Layouts".

Enjoy.