how to switch from 3d to 2d in v.2007

[haya]

Hello every body
In autocad version 2007 , as you all know when open the program there is a dialog box appears asking you if you want 3d modeling or classic with a black work space not the lined one

my companion choose 3d and save it
Please can help me how to switch it to classic
I know that I should know how but I am fameliar whith 2008

Thanks :)

[ReMark]

One way is to open a new drawing and select acad.dwt as the template. Your coworker apparently selected acad3D.dwt.

[ReMark]

To display the prompt re: 3d or classic check the "Show all warning messages" checkbox in Tools > Options > System.

[haya]

It`s worked....thanks for your help