Rich Text Editor Options Mac/PC Different?

I’m a PC User and when I installed WordPress 2.0 or 2.1 a while back I noticed some of the options in the Rich Text Editor for Write Post were missing. I sort of just learned to deal with it and assumed the buttons were gone.

However, a few days ago I used my aunt’s mac and I accidently pressed Ctrl+B or that weird symbol+B and more options came up in the Rich Text Editor – options that I thought were missing!!

Is there any way to get these options on my computer? What’s the shortcut key for it? Thanks!!