I've been practicing the intro from Radioheads, My Iron Lung, and I would like to learn the verse part. This version is the one I would like to learn. I'm not sure how many variations there are:

[forbidden link]

His tuning is a form of open G: A to G, high E to D. The problem is that I've learnt the into in normal tuning. Is it possible to play it like he does with normal tuning? And what chords should I use?

Any help is appreciated :-)
Just saw that the link didn't show. It's the one from "ProGuitarShopDemos" called "Radiohead - My Iron Lung Guitar Lesson".