I'm working on Civil 3d 2012 and when it's set on Autocrad classic profile I can select my layers right in the drop down list by typing the first letter of the layer and it goes to it. But when my profile is set on Civil 3d, I can do the same in the layer drop down.
Is there a way to set it like autocad classic?
One thing you can do is use the layer dropdown on the Quick Properties or the Properties dialog. These will react to key strokes.
You can also go into the cui make a new old style toolbar and add the Layer Control to the toolbar.
I'll also add that if you like the ability to change layer color using the dropdown then you will need to display both the new layer combo control and the old layer control.