I upgraded to Windows 7 Enterprise RTM (64 bit) the other night and haven't been able to use my computer since because I can't log on to the internet. Drivers are failing for both wired and wireless NICs.
The wireless NIC is Realtek 8187 USB 2.0 Ethernet Adapter and the dual wired NICs are just generic Intel 10/100/1000 NICs. I've tried every driver I can find on the internet but none of them work for the wireless card. I've even inquired on Asus forums and gotten nothing that has worked. The wired NICs were my next option so I dragged my router within reach of my PC and plugged in the NICs and neither of my wired NICs would get me online either. I went on Nvidia's website and got the latest nForce 590 SLi chipset drivers for 64 bit Windows 7 which included updates for my wired NICs and I still can't get online.
My PC is dead in the water with no internet obviously so I'm about to revert back to XP until Realtek/Asus get off their asses and put out some drivers that are worth a damn.