I'm not sure what you mean. You want the Category menu on the left to be in English, and the Category menu on the right to be in Spanish?
Technically this is more of a zen-cart question, not a template question. Zen-Cart doesn't support this, but if you make a copy of the categories sidebox, and rename it to something else, then force it to use the Spanish language file, instead of using the site default. But then the products would still load in English. I guess with a lot of modding you could have multiple languages, but it would involve quite a bit of coding.






