Setting up my new Windows 8 machine and I just realize Google Drive Windows client recognizes my locale as 'Thai'.
The problem is not about UI but the default folder name is in Thai, "Google ไดร์ว" while I want it be just "Google Drive".
The story is more complex as there is no Language Preference in Google Drive client yet. So you need some workarounds by adding
in Windows Environment Variables.
See detailed procedure at Google Drive Forum