Replace IONetworkingFamily.kext in 10.4.4 with the one that came in 10.4.3, delete Extensions.kextcache and Extensions.mkext, restart you hackintosh and you should be able to use your NIC again.
CODE
sudo su
cp /Volumes/<insert OSX.3 volume name here>/System/Library/Extensions/IONetworkingFamily.kext /Volumes/<insert OSX.4 volume name here>/System/Library/Extensions/IONetworkingFamily.kext
cd /Volumes/<insert OSX.4 volume name here>/System/Library
rm Extensions.mkext Extensions.kextcache
You can do this in either 10.4.3 or 10.4.4.