Leopard installed, Need help with some issues

[radeeON]

Alright so first I'll list my pc specs.

cpu: Pentium 4 2.4ghz/1mb L2/533fsb prescott SSE2/SSE3 are supported

motherboard: asrock p4vm800

memory: 1gb ddr

hdd: 160gb

video card: ati radeon x800 xt 256mb agp x8

drive: samsung writemaster dvd burner (mac os x totally allows this drive to burn dvds and cds)

 

Alright so I installed leopard with no issues but once I rebooted the screen would just be black and nothing would happen, After trying various things I inserted my old osx86 tiger 10.4.7 in the dvd drive and this let me boot up to my installed 10.5. Now I have 3 main issues; Sound is working but only on the right speaker. My ethernet port is not being recognized which sucks cause I cant use internet from mac os x without the ethernet port working. And third, The interface is sorta flakey, I'm guessing this has to do with the video card drivers being incorrect, In system profiler it sees my video card as 128mb but its actually 256mb..

 

So if anyone can help me get the ethernet and video card working properly I would be extremely grateful. BTW, I installed the ToH release of 10.5

 

Looking forward to your replies, Thanks in advance!