cannot get wireless connection on new installation of vista on dell inspiron 1545

hi

Please could someone help. I have fitted a new hard drive on my dell inspiron 1545 and reinstalled vista have downloaded the drivers for the dell in order and it has installed except for the wireless internet drivers which one was corrupt and when I downloaded the wizard for installing the wireless drivers it said none with presence. Please could someone help as I have downloaded all of them from the site except the one which says it is for 1515 which was corrupt.

Thanks