[...]
I will now generate the commands needed to load the I2C modules.
Sometimes, a chip is available both through the ISA bus and an I2C bus.
ISA bus access is faster, but you need to load an additional driver module
for it. If you have the choice, do you want to use the ISA bus or the
I2C/SMBus (ISA/smbus)?

To make the sensors modules behave correctly, add these lines to
/etc/modules:

#----cut here----
# I2C adapter drivers
i2c-isa
# I2C chip drivers
it87
#----cut here----

Then, run /etc/init.d/modutils


To make the sensors modules behave correctly, add these lines to
/etc/modutils/local and run update-modules:

#----cut here----
# I2C module options
alias char-major-89 i2c-dev
options it87 ignore=-1,0x290
#----cut here----

WARNING! If you have some things built into your kernel, the list above
will contain too many modules. Skip the appropriate ones! You really should
try these commands right now to make sure everything is working properly.
Monitoring programs won't work until it's done.