ftp://ftp.sunfreeware.com/pub/freeware/KDE/
ftp://sunfreeware.mirrors.tds.net/pub/sunfreeware/KDE/
Files and many details about KDE can also be found at the KDE Solaris site
The installation information can be found in the main KDE download directories or at
OLD.KDE_INSTALLATION_INSTRUCTIONS
(yes, the OLD is correct).
If you want to get the source code for the above packages, go to the directories for Intel/AMD or for SPARC at:
ftp://ftp.sunfreeware.com/pub/freeware/KDE/SOURCES/IA32AMD32
ftp://ftp.sunfreeware.com/pub/freeware/KDE/SOURCES/ULTRASPARC-II
Detail building instructions for KDE are at
NEW KDE Solaris, Building Instructions for Solaris 10 with the Sun Studio Compilers (pdf file)
For help with KDE-Solaris issues, you can go to the