1. Update OS doloe ...
#yum update

2. Install GNOME
CentOS 5 = #yum groupinstall 'GNOME Desktop Environment' 'X Window System'
CentOS 6 = #yum groupinstall 'Desktop' 'X Window System'

3. Install NX
#yum install nx freenx

4. Restart SSH
#service sshd restart

5. Copy Key
#cat /var/lib/nxserver/home/.ssh/client.id_dsa.key
atau jika gak muncul keynya coba
#cat /etc/nxserver/client.id_dsa.key

6. Download NX Client untuk remote di http://www.nomachine.com/download

7. Setting Client

Ikutin settingan di gambar, untuk Key yang di copy pada tahap no 5 di pastekan ke Key client http://prntscr.com/1yqbkg

Selesai ^_^