Modding home made speed controller

does anyone know how to make a fan speed controller? i've got an 80mm fan on the front of my case and its doing my head in with the noise. i tryed fitting a 120mm but the drivebays got in the way so it looks like i need a speed controller or ear defenders

 

They are right under your nose on BT's Site!

Heres one just adding a rheostat to the fan by Macroman
Linky: http://bit-tech.net/article/56/

And then here is a little more in dept also done by Macro on bulting a fanbus
Linky: http://bit-tech.net/article/52/

Hope this helps you out.

 

OHH so there is a guide for making a fanbus. I am probably going to do one too. *Except it is going to controll my lights and fans.

 

thanks tm36usa thats what i'm looking for.
i just cant find the parts on the maplin website

 

Try these:

http://uk.farnell.com/

http://rswww.com/

 

i'd rather get the parts from maplins as the main warehouse/shop is about 10 mins drive away so does anyone know if they still sell rheostats