With vista it is not always necessary to reload all the drivers in a sequence but if you are wanting to try the steps are outlined HERE You will find the current drivers HERE.  You can download them from another computer and transfer them via a thumb drive or cd 
I reinstalled the system software on my inspiron 1525 notebook. The computer would freeze when it went to sleep but otherwise everything was working fine before the reinstallation. Now, my wifi doesn't work and the computer tells me that my network adapter needs to be installed and configured. I can't get internet access on the machine. Please tell me exactly what to do. I have the disks to reinstall drivers and utilities. What order do I reinstall everything and how do I do it? Help!
Install inspiron 1525 system software and chipset drivers