I want to access my Motherboard's ISA Bus to read temperature sensor values and set cooling fan speeds. I could not find any practically helpful information but the hint to use "GiveIO", a unviersial I/O driver which unfortunately is not compatible with windows 7.
If there is no avoiding of coding a driver, any useful information on how to get startet would be highly appreciated.
There is an open source hardware monitor at http://code.google.com/p/open-hardware-monitor that seems to do what you want. It uses the WinRing0 driver for hardware access.