SEO of large database

I am a novice trying to SEO my own site. Currently trying to provide meta descriptions for my database of 6000 parts. I have downloaded the plugin SEO Ultimate version 7.6.1. I need a way to provide the description for the part numbers by csv file or some other means and not by adding them individually one at a time. The database is in xl format and I managed to add them to my site using csv but now I need the meta descriptions on Google.