All i've gotta say is that i'm damn pleased to have made the rheostat. I can fully control my fans now, as loud and powerful as I want or as low power/silent as I want. It works great! Also, it is a breeze to put together. To build your own, have a look-see here: http://www.virtual-hideout.net/guides/

Here's a screenie for you guys, running a delta 12EHE (80mm, 80cfm)
at different speeds:



I'll get my hands on a digicam inside 2 days, get you some pics of my setup here