This question is answered at least 20 times per week on these forums.  Did you install the chipset drivers as the first drivers installed after reinstallation of Windows? Without the chipset drivers, Windows will not be able to recognize or install drivers for many other devices. Once the chipset drivers are installed you need to install the drivers for your network adapter, video adapter, audio adapter, wireless adapter, and modem.

Steve

If you have the Broadcom 440x integrated ethernet network controller, the drivers are at:

http://support.dell.com/support/downloads/type.aspx?c=us&cs=19&l=en&s=dhs&SystemID=INS_PNT_PM_600M&os=WW1&osl=en&deviceid=2966

If you have the gigabit integrated adapter, the drivers are at:

http://support.dell.com/support/downloads/type.aspx?c=us&cs=19&l=en&s=dhs&SystemID=INS_PNT_PM_600M&os=WW1&osl=en&deviceid=2967

Steve

nevermind, i found the right driver. thanks for your help!

yes, i installed the chipset driver. what drivers do i need for the internet? thanks for your help