2 omekas sites with one installation only?

I have omeka 2.02 installed

and I would like to know if it is posible to have running somehow to omekas site using the same omeka installation, or alse how I should do to have 2 sites different on my server

or if you have any idea, I am planning to run two different site with different audience, one spanish speakers and another for english, what should I do what you suggest me to do?