exporting mysql database from wordpress.com

I’m trying to set up a second www.ads-software.com site,and I
can’t figure out how to export the SQL (or MySQL)database from wordpress.com, so that I can set it up on www.ads-software.com.
I exported the posts just fine. (got the XML file)

I successfully transferred 1 site from WP.com to WP.org. I will ultimately have 3 blogs. MU is too much for my situation.
I actually don’t SEE an “export SQL database) anywhere on wordpress.com.,
just one “export posts” option.

Has anyone set up a 2nd or 3rd WP.org blog and exported from WP.com?

so far, can’t find any answer in the forums.

Thank you!

karen