There are three chapters at the moment, I can't promise to expand but I still love both worlds so we'll see.  This was written I think before even Goblet of Fire came out.  In any event, you can pretty much bet it's more movie based than book based

Part One: Arriving in Middle Earth

Part Two:  Setting Out From Bree

Part Three: Ringwraith Attack and Crossing the Ford
Misc
Love's Twilight
Harry Potter and the Ring of Sauron
The Very Secret Diary of Harry Potter in Middle Earth
Claudius
Harry Potter and the Ring of Sauron
Part One
Part Two
Part Three
Fan Fiction
Lord of the Rings
Real Person Slash
Misc
Page currently undergoing slow renovation, beware of falling links.  (Christ I once swore I'd never put up an "Under Construction" banner)