Ok, I've got more pics on my website now... ( http://www.benjammin.net/www/pages/projects/ )
and I got the I2C connection points in the MPEG. It's still waiting for a chip from Dallas as the 1621 is not a stand-alone operation part. But they have a new one that is. I sent an email to MLORD asking him if he'd be willing to try a patch to hiJack to support the 1621 or thr 1721 (both require some commands to get the unit going).

If he's can swing it, the unit will have a user controlled fan. If not, the temp chip dallas is sending me can be set before insertion into the system and will run on it's own with the settings programmed beforehand.

Happy Trails,

-Ben