Device Instance ID: ACPI WEC0518 4&61F3B4B&0
Name: Intel (R) 82801DBM LPC Interface Controller 24CC
I/O Controller: Intel(R) 82801DBM I/O controller hub (ICH4M)
Windows XP does not install the driver byself; probably because of a poorly written INF file. Oddly enough Intel's website does not have it either.
Follow the instructions below to properly fix the issue.
1. Control Panel: System: Device Manager
2. Click on Unknown Device -> Reinstall Driver
3. Don't Search. I will choose the driver to install.
4. Show All Devices
5. Find: Manufacturer: "Intel" Model: "Intel (R) 82801DBM LPC Interface Controller 24CC"
NOTE: This has been tested with a HP Pavilion ZT3200 laptop and will probally work with other computers just fine - long as the "Device Instance ID" is exactly the same.