drivers for Dell Laptop

Hi. I have got a Dell Inspiron 1520 laptop which I am having to
install windows on. I have been to there website but under this model
thir are dozens of video and sound drivers. This sounds stuoid to me
as each model should be the same.

I need to find out whar Vieo driver
Sound Driver and
wireless driver for the bult in adapter is.

I have heard that you can get information through the command dos box
prompt?

Desmond.
.