Does anyone know where I can find some sort of account of the fall of Satan? I need some background for a story I'm writing...

  I'm not really sure, but I think there's something in Isaiah. Somewhere in the Bible, anyways. www.biblegateway.com
  Try searching for something like "I will make my throne higher than the Almighty's" or something (don't use that quote word for word, I don't remember well).

I think in the book of Revelations (Apocalypse of John?) tells of the angel (Michael? Sorry, not good with the English in Biblical terms :P) defeating Satan in the beginning of time. 
Or if you mean the fall of Satan that's supposed to come in the future, then I'd still look in the Revelations.

It's in the bible in Isaiah and also in the Koran, but I'm not sure where. It is also in the book of Enoch that is not included in any but the Ethiopian Orthodox bible, but it's available online.

Revelation might include references but not the actual account. Revelation is about the end times and Satan's final defeat.

  Isaiah is long, and hard to skim through, so I would suggest doing a database search. I wonder if they refer to him as Lucifer in that passage?

He is first mentioned in Isaiah 14:12-21, it depends on the translation whether he is refered to as Lucifer or they translate his name which means Bringer of Light.

***looks up* That was the part I was referring to. I'd never found it myself before. In NASB they call em "star of the morning... son of the dawn" (Verse 12)

Hope that helps!

mmm. i shall poke about for that. thank you

revelations? good. i was not looking forward to reading the entire bible... XD