problem Installation ims5.2

Hello,

On sun Solaris 8/ Core package + recommended patch,

I try to install ims5.2

during install process, it stop with java/X11 error :

Installation process search libX11.so.4 to start jre.

But I have no X11. I have Core Solaris.

How to install ims5.2 on core solaris system

Error file and errors messages

Setup:

A serious problem occurred while installing the iPlanet Messaging Server Init Config. It reported the following problem:

The application command

"jre -cp .... " could not be run.

Please examine the log file

"/usr/iplanet/server5/setup/msg/iplanet-msg-install.log"

Install.log

TYPE: Application

LOCATION: UApplicationTools::RunApplicationUNIX

DETAILS: The application command "jre -..." could not be run.

Thank you

Christophe

[878 byte] By [706608] at [2007-11-25 8:14:34]