Matt,
Hmmmm, I think that you may have stumbled into the wrong forum! This forum is to support the truly amazing, fantastic, stupendous "Game Editor" (Yes, I'm hooked). This is *NOT* the Game Maker forum. Game Maker (GM) is another authoring tool that *ONLY* works on the WindowsOS.
*Game Editor (GE)* works on many,many platforms: Windows, Linux,MacOS,PocketPC,Symbian--the list keeps growing.
If you are going to invest the time to learn an authoring system, I do suggest that you focus on GE *NOT* GM. GE is a younger program, but it is much more flexible, has fantastic support, and a great forum.
Oh yes, did I mention that it runs on many,many platforms?
BTW, it is also reasonably priced.
Go here
http://www.game-editor.com/download.html and download the demo. See for yourself.
*Now, after all of that, if you really do have Game Editor (GE), then you should see the "Add Actor" button on the menu at the top of your intial GE screen. Select it and the Create Actor box will jump up. Follow the previous post from there.