What kext do I need to use the web?

after i install mac os x 10.5.5 on a unsuportable computer with a intel cpu, everything is going great, the only problem is that i cant get into the internet because this computer is called a hackintosh, ralph told me i need kexts to customize the internet conection, i found multibeast, but it doesnt want to work, i need to know if one of you can help me get the rigth kexts, oh and something i forget to say, i didnt install mac os x 10.5.5 with the apple install disk, i try to to that to many times, ashley that instalation disk is not even mine, is Mayer's disk, i bet he is mad at me for not taking them back to him, well the good thing is that i built my first hackintosh with the software called IDENEB. any help will be appreciate