Hello, I Have a forum ( http://www.forocamping.com ) in phpbb2 that has the mod advanced seo mod rewrite.
Now I am updating the version to phpbb3, and want to install the mod mixed phpbb3 SEO rewrite.
My question is that now the forum is installed in the root of the domain, and I want to move it to a directory www.forocamping.com/foro without losing the pages index-linked by the google.

For example, now in the google one of the pages that are index-linked in the current forum of phpbb2 is -http://www.forocamping.com/impermeabilidad-tienda-campaa-vt967.html and what I want is that with the new version, on having done click in the google to -http://www.forocamping.com/impermeabilidad-tienda-campaa-vt967.html the page appears -http://www.forocamping.com/foro/impermeabilidad-tienda-campaa-vt967.html not to lose the previous links by google..

How I can do it?
Thank you in advance!

That will be very easy with the zero duplicate.

All you will need to do is tweak your .htaccess a bit and leave it at the domain's root level (which is default for the .htaccess generator).

To test and validate this, first choose you final url standard, then generate an .htaccess to be used int he foro dir (using the "more option" option of the .htaccess generator and then "alternate location").

And post here both your new and old (the phpbb2 one .htaccess) and I'll tell you how to proceed to enable redirecting for old links