i installed iatkos 10.5.7. but i'm not able to connect internet .,so how to fix tis problem ..

on realtek rtl8168d(p)8111d(p) pci - e

system/library/extensions/IONetworkinfamily.kext

system/library/extensions/Realtekr1000.kext

so wich i have to delete & wich one i have to install


?