Screen resolution, sound and network problem (iAtkos)

[piyush.paliwal]

Hi guys,
i am through with the installation and was able to boot into Leopard without the DVD also.. but now the problem which i am facing is

1) My laptop's screen resolution is 1280x800 bt all i can see is 1024x768 in the choices.. because of this the text is really vry blurred. (I have ATI Mobility Radeon HD 3400 series graphic card).

2) There is no sound.. the sounds dialog box says i have no sound hardware.

3) i use Broadcom ethernet but leopard cannot recognise it.

please help me out guys...