Version? In 08, Surfaces ->Extract from Surface. Select the boundary (it has
to be on in your current style) and go.
07, copy and explode, or aeclineworkshrinkwrap if you have some time.
--
James Wedding, P.E.
Engineered Efficiency, Inc.
Civil 3D 2007
XP Tablet, SP2, 2GHz, 2G
www.eng-eff.com
www.civil3d.com