HI, I‘m from china，and i am intrested in MAC OS,my notbook is 6930 842, I followed your steps and it worked, but the only trouble is that i put a 4311 wifi card into my notebook and the original 5100 AGN is still in the solt 1, and after i install the 10.5.7, i found that the 4311 doesn't work, in about this mac, the native airport solt is nothing,no device infomation on it. i don't know how to slove it, could you give me a help?

thank you!!!

hope to hear you soon.