This is the order in which you should install drivers for ASUS notebooks:

1) Chipset driver (INF update)
2) ATKACPI driver and other atk drivers
3) VGA driver
4) UAA driver (audio patch)
5) Audio driver
6) Modem driver
7) LAN (ethernet) driver
8) Card Reader driver
9) Wireless Console
10) Bluetooth driver (optional - if you don have BT just skip it)
11) Wireless driver
12) Other drivers
13) Utilities
14) Microsoft updates

If you follow this order then for 99.9 you will get your hardware to work.