Unhappy [Q] backtrack vnc server trouble

Yesterday i install Android vnc server to view Backtrack. I did everything they tell but when i loaded it in vnc, i received a gray screen and an"X" cursor. I searched for help but nothing worked. I tried to modify the ~.vnc/xstartup file and it looked like this:

# Uncomment the following two lines for normal desktop:
# exec /etc/X11/xinit/xinitrc

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
x-window-manager &
I hope to find a solution to this. Thanks in advance