Multilingual Sitemap

[alex-party]

Hi,
I've created multilingual web site and now I'm thinking how google will parse this web site.
The trick is that sitemap (url's) within the web site does not change when user switches language. I.e:

"index.php?page=home" [en] -> changes content and keywords
"index.php?page=home" [de] -> changes content and keywords

+Links that switch the content:
"index.php?lang=en" -> switch content under "home page"
"index.php?lang=de" -> switch content under "home page"

So, google will be looking at the same page(url), but reading different contents!

How is it going to add both pages in database and show them in search results?
Or is it going to overwrite contents with the last page it found ([de] in this case) ?

Any ideas welcome!
Thanks!

[alex-party]

I guess I can reply to myself
After a little thinking, I've decided to use apache mod_rewrite module for splitting up web site into /en/de/ sections and still using single code.

This is how .htaccess file looks like:
...........................
RewriteEngine on
Options +FollowSymlinks
RewriteRule ^en/(.*)/?$ index.php?action=$1&lang=en [NC,L]
RewriteRule ^ru/(.*)/?$ index.php?action=$1&lang=ru [NC,L]
RewriteRule ^de/(.*)/?$ index.php?action=$1&lang=de [NC,L]
RewriteRule ^lt/(.*)/?$ index.php?action=$1&lang=lt [NC,L]

RewriteRule ^(.*.html)$ index.php?action=$1 [NC,L]
RewriteRule ^([^/\.]+)/?$ index.php?action=$1 [L]
...........................

Basically if you have web site running on PHP and you're using something like index.php?somepage=id syntax and you want pages look like somedomain.com/en/ , then create .htaccess file with the text above and you'll see how it works.

Hope that helps someone.