help with AUDIO & WIRELESS ketz

Hi to all,
finally i have done my "leopard" installation.. (leo4all) but remain some little
problems.. i can't found ketz for AUDIO & WIRELESS...
did you have the link ??? :)
my hardware is:
Processore Produttore Intel Tipo Centrino Duo T2300
Velocità del clock 1.66 GHz Front side bus 667 MHz
Chipset Intel 945PM ICH7
Memoria RAM 1024 MB
Hard Disk Tipo SATA 80 GB
Adattatore Grafico Produttore ATI Tipo Mobility Radeon X1400
Memoria totale 512 MB HyperMemory
Sistema Audio Scheda Integrata
Altoparlanti Integrati
LAN Ethernet 10/100 : 1 Realtek semicondutor RTL8169 Gigabit
Wi-Fi 802.11b/g : 1 Intel corporation PRo/wireless 3945ABG

is there also some good boy could explain me how to upgrade to lion??

thanx in advance
Al