I found I could not change the language from Chinese. Some research showed I was expected to pay for an upgrade to get Windows, that I paid for, to actual be usable.
Yeah, that changed in Windows 7. Previous versions of Windows had language pack supports at Home and above editions but MSFT made that into an "enterprise" or "ultimate" feature in Windows 7. Very annoying for a lot of people I know that speak and write multiple languages, some of them have switched to Mac OS X for just that one reason.