Need drivers after installation of Windows 7

Hi:
I have formatted my friends desktop.
It was full of virus and trojans.
I have installed windows 7 and now I can not connect to the internet as well the sound card does not work.
The pc is a V2 Premier
I have this info also:
Network Adapter :
SiS900 10/100 Ethernet adapter
Sound:
BT 878/Fusion 878A Video Captive
BT 878 Media Stream Controller
Sis 7012 Sound Codec
Also I have the FCC 91-wws-070104-v2p
Can anybody help me out? I look everywhere but I can not find the drivers.
Thanks
 
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