Language packs for Windows XP?

Does anyone know a way where you can get other language (such as Japense) packs installed on Windows XP without having to use Windows XP CD? I was just wondering if there was a way to get other kinds of languages. I know for sure that I just installed some fonts that a friend gave me and that seemed to work.

Thanks in advance for any response.

If you have Office XP, there's a possible solution here:

Input Method Editors:

If you haven't, sorry.

EDIT: Unless I'm misreading it, according to this page, Japanese should already be on XP.

But after following the directions, it isn't on mine.

Languages Supported In XP: