problem resolution in sony vaio vgn-nr180 15 inch

[anggun]

i successfully install ideneb 10.5.6,my laptop specification

 

1.intel core 2 duo

2.intel GMA X3100

3.intel high defition audio

4.The Intel PRO wireless LAN 3945ABG

5.15 inchi monitor

 

maximum resolution is 1280x960,, but finder menu repeat under dock menu,,i tried use another resolution, but not work..how to maximum my resolution in 15 inch monitor??

 

then, my sound not work, any idea??

 

thx so much