Hi there people I have recently started studying autocad and our teacher is bit confusing when it comes to introducing the whole thing. He says that I need to change interface to "Auto Cad Classic" I don't know how to do it from my educational software from home. I already searched the net for solutions and I have read that one should click on a gear bottom right of the software or check the pull down menu top left. But I don't get any option named "Auto Cad Classic"
 
 
I just get 4 others which are: Design,Document,Detailing and Visulization.
I would be thankful if someone could explain this to me as I am in hurry of completing some tasks and software is AutoCad Architecture 2009 and I haven't chosen the wrong coz my teach downloaded it for me.. 

Look into the help for keyword CUI and editing menu, please.

I think your looking for workspaces.  Make sure the workspace menu is loaded by right clicking on the menu area and picking AUTOCAD then check WORKSPACES.  Now click on the pull down arrow and pick AUTOCAD CLASSIC.