Step 1: Login as root.
Step 2: switch to normal user
Step 3: switch desktop as your desire like KDE or gnome which will be as "switchdesk kde"
Step 4: vncserver :2 -name proxy -depth 24 -geometry 960x700
Step 5: Prompt for password will come. set the password for your vnc window.
Step 6: Its all folk. thanx for being with us. bye and take care
http://www.google.com/search?hl=en&q=vnc+"geometry:800x600"+"depth:24"+chkconfig+vncserver