This is the Civil 3D group. There's another forum for Land Desktop.
I think there's a way to do it in LDD 2008, but I believe it was much like the old-style method used in Civil 3D prior to 2010. In other words, I think you have to use a FBK file.
The process has gotten easier with C3D 2010, and now we can process linework commands without the FBK file. But that doesn't help you in LDD 2008...
-- Sinc
http://www.ejsurveying.com
http://www.quuxsoft.com
Sinc