Don't know anything about Mac all I know is when it came to loging in Mac OS X was obove the log on screen and the windows icons on the desktop had changed. when I used outlook express a apple logo appeared in the bottom right section of the screen.

I had to do a reinstall with a master set of cd's , even though the cd rom was disabled the pc was able to recognize it at boot up . The hard drive is also bigger (10G app) so I have lost the back up which was in a hidden portion
Thanks all