hi all,
i have a question concerning multiple-languages websites and SEO.

What is the best way to structure a multiple-languages website to get all pages properly indexed by
search engines?

I mean, do you have to make separate pages for each language, or can you maintain one page per topic
and select the right language by passing an argument in ASP or PHP?
(something like "page.asp?language=dutch")

I used this method for http://www.vacationsbrazil.com,
but until now only the Dutch side (the default language) is well indexed in Google.

Is there a reason to create separate directories and files for each language?

any comment on this subject is very welcome.
kind regards,
Gert