What we used to get hwmon to work on Winbond W83627DHG Super IO Sensors
We installed;
  yum install gcc kernel_devel686 kernel_headers.i686
  wget http://www.nodeofcrash.com/download/w83627ehf-centos5-kit.tar.gz
  tar -xzpsvf w83627ehf-centos5-kit.tar.gz
  cd w83627ehf-centos5-kit.tar.gz
  execute make
  which should create the module w83627ehf.ko below.
  TEST
  cp  w83627ehf.ko /lib/modules/2.6.9-78.0.13.ELsmp/kernel/drivers/hwmon 
execute
   modprobe w83627ehf
Now run sensors-detect selecting "Y" at the Y/n prompts.

Note files server-temperature and server-fans
may be modified to provide monitoring of fans and temperature
modify for your use install the files in /etc/cron.quarter-hourly making executable.