Windows 7 Support Software setup crash

I'm trying to install Boot Camp on my Windows 7 that I installed on a partition on my 13" macbook Pro (Intel Core Duo i5). The setup.exe program that installs boot camp and various drivers for the mac hardware crashes every time I run it. It says "Failed to install driver", and when I click the information link, it says "Unidentified Driver failed to install". Then the software crashes and my computer reboots. And then it fails to 'repair' the start software. So then I reboot into Windows and try again.

What is going wrong? Any help is appreciated.