New Dell 1645 i7 but installing Vista 64 HP - from dell's driver downloads should i install the windows 7 or vista drivers?

Hi guys... the question is in the subject. I ask because I selected vista 64 and installed the drivers, but i still have a missing driver "network  controller". the windows 7 driver list is different and has more drivers to download under the  network tab - this has got me thinking that maybe i should have installed the windows 7 drivers even if I'm using vista home premium 64, because the laptop came with windows 7 and these drivers are probably more up to date. What do you think?

Any advice would be much appreciated. I can't call dell tech support as this is a refurbished unit and has no service tag.

Thanks!

Sachin