Dell Latitude D630 SM bus controller

Hi 

I have successfully completed a fresh install of Win XP Pro on by laptop and the final driver that just will not install 

is the Intel Chipset driver. I have downloaded the latest driver from Dells website using my laptop tag to get the correct drivers. 

In device manager I have a yellow exclamation mark against SM Bus controller. However, when I install the chipset driver at the very end, the install says 'error, install will now end', then you click close and then it wants to reboot. SM Bus controller remains with an exclamation mark in the device manager. 

Can anyone help?