Clip ESRI's Network from CD?

Discussion created by KevinBellSLC on Nov 9, 2011
I'm using the network dataset from the ArcGIS data & maps DVD, but it's huge!  I was hoping to copy it to disk and the delete everything except for my area of interest and then rebuild it, but even when on disk the start editing button is greyed out.  Has anyone been able to edit it?

...or, does anyone know the proper steps to rebuild it from the source feature classes?  I was able to export the feature classes (EdgeSource 1,2,3 / street signposts / turn source).  I've built my own ND's before, but this one is much more complex than mine.  : )