if they are dell drivers, then if am not wrong , the drivers would be zipped, so what you have to do is.. extract it to a folder and save it on your desktop after the extraction is complete , next copy that folder in which you have all the files extracted and copy it onto your flash drive and after that connect it to that computer which needs the driver and then you will surely find the setup.exe in the folder and so go ahead and execute the file.. also u have mentioned that your network card is not being detected, confirm that by checking in device manager if the hardware is showing up or not