download new drivers

[josievista]

I am running behind on the latest drivers for my gateway laptop mod 6705 w/vista home premium w/service pack 2. I need several ? answered. 1st one is where do i find these drivers ?, how do i know which ones to pick ?. 2nd ?, how do I back up my enter c drive to portable hard drive ?. When I tried to back up my computer says burn-to-dvd. Do I need to update from vista ? or am I stuck with dvd's only ?