I’ve got the lm_sensors configuration working now. There’s a few lines that don’t appear to be connected, so they’ve been ignored. They would be the +5v, -5v, -12v, and VStdby lines. The only quirk was that the Venice core Athlon 64s change their clock speed and hence the VCore voltage depending upon the load on the CPU.
Here’s a link to my sensors.conf file. This is specifically set up for a Gigabyte GA-K8NSC-939 motherboard with a Venice core Athlon 64 3000+. The VCore should be the only difference if you’re running another CPU, so check that. Oh, and my power supply fan is connected in to the SYS_FAN connector on the motherboard.