Now back to the server.

I tried to configure vnc so i can log into the server's GUI interface, but dont know where to find the config file to modify it properly. I can log in using vnc from pc to linux server but only the terminal and green background shows up.

it's /etc/vnc/config =]

Hi Admir,

Please open the file $home/.vnc/Xstartup file with any editor,
modify the file as below:

#!/bin/sh

OSNAME=`/bin/uname -s`
if [ ${OSNAME} = Linux ]
then
exec /etc/X11/xinit/xinitrc
vncconfig -nowin &
else
xrdb $HOME/.Xdefaults
xrdb $HOME/.Xresources
echo 'dtsession*wmStartupCommand: /usr/dt/bin/dtwm' | xrdb -merge
exec /usr/dt/bin/Xsession &
vncconfig -nowin &
exec xset fp= tcp/localhost:7100
fi

I hope, you will have to uncomment two lines.
Start the vnc service like:
#service vncserver restart

Try to connect with full X feature.

Have a blessed time,

Deepak