Leopard Laggs, Plus, no internet

I have just installed leopard on my machine using kalyway 10.5.2 DVD. Here is my config:

CPU: Intel Core Duo T2450
RAM: 1.5gb DDR2
Chipset/video card: ATI Xpress 200m
Hard Drive: Hitachi 60GB 5400rpm Ultra-ATA/100
DVD Drive: PIONEER DVD-RW DVR-K16RS ATA Device
External DVD Drive: LG External Super Multi DVD Rewriter
Chipset: ATI RS400/RC400/RC410
Southbridge: ATI SB400

I used a custom text so it would be compatable with my chipset, and in the options settings when installing i only selected the driver for the Apple On Board ATA mombo. Leopard boots up prity quickly, around 30 second, but it seems to lag when in the OS. Is there anyway to fix this? Also, there is no no wireless and would appreciate the help in fixing this. I belive my wireless card is an Atheros wireless G but i dont know the exact model. Thanks for the Help!

Moderator notice: Do not post in the news section. Moved to the appropriate topic