How to reset the Preferences?

[Blaine]

Hi,
I am having trouble when I have a Plane and I ArcRotate around it, I can only see only one face of it. The other face disappears completely when I rotate to it. I can't even select the plane when I rotate to the other face. Any suggestions would be greatfull.
Thanks in advance.

 

[Aurelius]

Hi,
There's an option for "cull backfacing" in the edit menus. Uncheck that and you should be able to see the backsides of your poly/mesh .Check the help files for more info.
Cheers!