Lexxion,
thanks again for your help, Vista Utilities did't work on sony vaio t2xp but its original Utilities (for widows XP) did work and most of Fn are working now.
now it tried to apply all this proceedure to my other laptop, sony vaio t150, after reaching to step 5, windows asked me to restart. after restarting, screen was still same i mean small with low resolution. and there is a message,
" HkWindName: hkcmd.exe - Bad Image. C:\Windows\system32\igfxsrvc.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system admin or the software vendor for support".
i can see the
driver name in the device manager next to display. but both files name are with esclamation yellow marks.
i tried to uninstall and follow your tutorial from step 1 to 5 but same problem. may be i have installed all windows 7 32bit updates first on this laptop rather sorting out the display issue first, or don't know what is the problem, please help

anybody please advise what to do
regards