Dell Inspiron 600m missing drivers help

I have a dell inspiron 600m, I reloaded windows xp pro and did NOT save my drivers. Now Iam missing the folowing drivers Ethernet Controller, Multimedia Audio Controller, Network Controller,PCI modem, Video Controller(VGA compatible). I am aware that dell has a driver download page but I dont know which ones to choose for my missing drivers.
The most important one I need is the drivers for my modem so I can connect to the internet. I do not even know what modem I have in this laptop how do I find that out?

All Dell drivers here: http://www.techspot.com/vb/topic100658.html