BackTrack 4 Pre Release acer aspire one 751h problem with greaphics driver

i'm install BackTrack 4 Pre Release on acer aspire one 751h without any problem check my previous post. But i had problem with graphics driver backtrack automatically detect graphics card as vesa with resulution 10024x768 where as my graphics card is "Integrated Intel® Graphics Media Accelerator 500" with 1366x768 resulotion suport. i'm read sevaral post related to this issure 1,2 none can sloved my problem. i'm tryed
sudo apt-get install xserver-xorg-video-psb and made the untimate disuster. after install xserver-xorg-video-psb i'm reboot my system then logon and type startx...its give error like

/usr/bin/X11/X: no such file or directory lablalbla

then i have to install xserver-xorg-core with command
sudo apt-get install xserver-xorg-core

then startx is worked and get back the graphical mode in backtrack again but still in 1024x768 resulotion..

if any one know how do i get work 1366x768 resulution in backtrack or ubuntu please give feed back as commant here