So, when you unload video from the Intel Atom N45x series processor, thing get better six ways of Sunday. But, then you've filled up your regular mini PCIe slot and you have to go with USB Wifi some way or another. They make USB Wifi modules that use the USB wiring in the other little mini PCIe slot (since there is no PCIe connection in the extra slot).
The parts are linked below:
Broadcom BCM70015 Crystal HD PCI Express Mini Card Video/Audio Hardware DecoderHardware Decoder for Apple TV 1080p(TBS7015)
A discrete mini PCIE video card
SparkLAN WPER-172GN / 802.11nbg 1Tx2R MIMO / USB Half-Size MiniCard (Ralink RT5390U)
A 802.11n/g/b/a Wifi card with a mini PCIe connection-- but wired for USB
People also have reported luck with the Qcom Q802XKG.
Qcom QCM-Q802XKG Wireless WiFi WLAN Mini PCI-E Card 54Mbps 802.11b/g 60-6229-1A
Qcom QCM-Q802XKG
