hi,

i have a forum in my old host and now i want to move it to my new account at cpwebhosting.net, without losing all the posts / members and, of course the skin.

how do i do it?

you create a backup via the cPanel option then restore it via the cPanel on the other host.

You should first install latest version of phpbb from fantastico and then restore the backup of your database from your control panel and add entry of the database name, username and password in the config.php file.