you can download acer aspire 4715z driver for windows vista sp1 from the link below. note that all the downloads below ONLY for WINDOWS VISTA SP1. Please make sure you have Vista SP1 installed before you install the drivers.
each of the link below point directly to file download of acer aspire 4715z driver for windows xp. these files are fully hosted at this domain with fast connection so you don’t have to worry about slow downloading speed.