Noob question, get a script running at boot

[huibert]

Hi guys and gals,

I'm new to Xbian, but not to linux/unix. I installed xbian on my raspberry pi model b 512mb and I have a question (probably one with a simple answer). I want to do this mod while running Xbian:

http://www.raspberrypi.org/forums/viewtopic.php?t=30347&p=430009

My question is, how can I get the code mentioned in the link to run at startup to run my fan. I plan on doing some overclocking and I just like the idea of a fan on there.

Thanks everyone