Language Bar Malfunction!

I run Windows 7 via Bootcamp on my MB Air (13"), which I unboxed days ago.

After installing the Traditional and Simplified Chinese language packs for Microsoft Office 2010, keyboard inputs for both Traditional and Simplified (both of which I need) were activated, which is great, but no matter where in Windows or any program I happen to be, the language bar only shows the two Chinese options, and toggling is only possible between those two, and not English.

In short, then, there is no "EN" option in the language bar now that it, and the Chinese inputs it makes available, are active.

However, in my keyboard settings in the "Region and Language" control panel utility, English input is also activated with the Apple keyboard option, and oddly, when I first log in to Windows, the "EN" for English *DOES* appear, but that's the only time that it does.

Deeply perplexed and truly annoyed. All help or insights welcome