New
#21
Yep, looks like that is indeed the cause. reventon should be posting shortly, hopefully he can find a new driver.
Here is a cheap PCI network card I recommend as a replacement: Newegg.com - AZiO AWD154a IEEE 802.11b/g PCI 802.11g 54Mbps Wireless PCI Adapter Up to 54Mbps Wireless Data Rates 64/128-Bit WEP, WPA
There are plenty of Windows 7 drivers available for it.
Feel free to go more expensive if you wish, just make sure it's compatible with Windows 7.