Printer drivers won't install

I have Vista 32bit Home on an HP Pavillion laptop. When I try to install a new Brother 2140 printer USB, I keep getting "drivers not installed." Yes, I've followed every installation step precisely, uninstalled and re-installed several times, talked extensively to Brother helpdesk. Earlier I was just getting "access denied". The USB port sees the printer as "ready" but there are no drivers. HELP