Good XML Libs for C++

Does anyone have any good XML libraries for C++ that they use, or have been recommended?

OP again. It's not a marked assignment, my prof simply said  to try to create a live currency converter if we wanted something simple and real-world to do outside of class. He never said how to do it, I just figured that XML data is sitting there, so if I could scrape that page every time the user wants to convert, it'll be as 'live' as live can be, realistically.

I figured it's a good chance for me to learn how to load external libraries and stuff into C++ on my own.

Anyways, thanks for the discussion, the DOM creator on Xerces looks like it might do the trick. Failing that, I might be back :o