TC 7.50 Beta 3, english language only.
Once installed, it's OK.
I've changed locale for non-unicode programs to Chinese (Control Panel-Region & Language-Administrative-Change system locale).
Restarted computer as was asked.
After that some digits in TC' main window are shown as question signs.
Here is link to screenshot (530 KB):
http://img252.imageshack.us/img252/2303/totalcmdchineselocale.png
Before Windows 7 I used TC under Vista, it was absolutely the same story

Waited for long time for TC 7.50 with full Unicode support...
PS. This looks strange, System Locale applies for programs, which do not support Unicode. While TC 7.50 is declared as fully supports Unicode. Plus incorrectly displays digits, which is even more strange.