Wordpress bulk upload problem. Wonder if anyone can help us out with this?

Hi all, I have a E-commerce site I am working with that needs to be in English and Spanish.

I have thousands of product descriptions etc.. in a CSV file ready to upload. I can import data in one language but I can't find a solution to bulk upload both languages. I have all the data in CSV documents just can't find a solution.

Has anyone got any pointers for me as I have been going round in circles for the last two days,

Thanks in advance.