Situation:

I have an site in english http://www.1up-seo.com

This site has a few sub-pages which are in german.

For matters of SEO i want basically a totally separate second site in German which i then could access under a subdomain or similiar.

I now could do a second drupal install from scratch and do a whole new site, but i really would like to work based off the existing one - especially since i know drupal has a "multiple sites" feature, but as always i cant find any information really.

Problem, and why i want to do this:

For my German "second" site i dont want my english blog entries, my english menus. I want a new site-title, and all this stuff from the english site of course stays when i go on the german sub-pages.

Should i just reinstall a new drupal from scratch or is there a easy way to copy everything to a sobdomain, have a copy of my english site and then work off this and make it to a german site ?

thanks !