If lm_sensors doesn't detect any sensors,...
the admin package is obviously not going to do much

Seriously: The 845 chipset isn't exactly new ...
even "SME 6.01" is newer afaik.
AFAIR the chipset doesn't contain any sensors in itself so you should look for other devices (sensors!) on your mainboard.
If you want help here, at least post the output of your "sensors-detect"-run
or you may want go straight to the
lm_sensors supportRegards
Reinhold