I'm creating my image for the laptops I manage and I have managed to get everything I need except the language bar to work for all users. I thought if you setup the language bar it just worked for all or none but I guess that is incorrect.
I am not really sure what you mean by it doesn't work. You would need to explain in much greater detail exactly what you want it to do, what it IS doing, and how you set up the image.
I would suggest that you look at this MSDN page, and the read all links in that document, but especially to these documents:
"Step-by-Step: Multilingual Image Creation in Windows 7"
"Understanding Multilingual Deployments"