Q: How do I reinstall CDE on Solaris 2.6? How do I uninstall it?
Solaris 2.5.1 used to have the "install-cde" command on the CD-ROM.
I cannot find it any more.

A: Removing CDE from Solaris 2.6 is not supported unless you are using
the "Core installation" option of Solaris, in which case you do not have 
CDE and OpenWindows and X11 installed at all. 
Changing installation levels (Core, Enduser, Developer, Full,
Full OEM) after the system is installed is NOT supported.
 
Having said that, you can pkgrm and pkgadd the following packages from the
distribution CDROM:

CDE Runtime:

SUNWdtbas
SUNWdtdmn
SUNWdtdte
SUNWdtlog


CDE Developer Software:

SUNWdtinc
SUNWdtab
SUNWdthed
SUNWdtdem
SUNWdtma
SUNWdtmad
SUNWmfman


CDE End User Software

SUNWdticn
SUNWdtwm
SUNWdtdst
SUNWdthe
SUNWdthev
SUNWdthj
SUNWdtim
SUNWdtrme


Solaris Desktop Extensions (if installed at all)
SUNWdtezt
SUNWdthez
SUNWdtmaz