Ok i solved myself, this is a bit tricky.. I haved already moved cms like wordpress, phpbb, drupal (..) more quickly :]

Because i used subdomains and subfolders, and because the data path is outside the domain name (like recommended!) the data path need to be absolute.

For know your absolute path, create a file called MYPATH.php and put this on:

<!--?php echo realpath('MYPATH.php'); ?-->  

Then visit this file by http and adapte..

Also my htaccess was modified (by myself..) but after plenty of custom code i wasn't renember..

After 8 but intense days (!) of elgg, i like it a lot, thanks to developers, nice job!

I learn that is more easy to customize a social engine* into a website than try to socialize a basic website cms :)

The loop system is a bit funny, like php master-->php slave-->html and it's not easy for beginners to understand that, i understand why slowly (I dont know php, just good at css, html..), all code is like on a "sandbox" and i like it just because if a mod go wrong, he will be desactivated by itself, so the "core" stay clean and the best: quick!!! I am sure this kind of structure can support heavy load, so i trust into future :)

 *elgg :)