I did a blog post about mine a year ago. It's just a bookcase, but it's the perfect height for computer use.
I don't stand for the whole day (or even most of the day when I'm relaxing) so I also have a 36" stool to sit on. I actually like it better than softer chairs, I think it encourages better posture. It's kinda hard to slump on a stool. I could be wrong on that though.
The monitors are ideally raised up a little bit when standing and pushed down when sitting so the top of the screens are at eye-height, which is ergonomically optimal or something.
The elevated shelf on the bottom is a foot rest and the books are to weight the thing (it's a cheap bookshelf).