phpwcms is a completely relocatable system and therefore it can be easily transported to another server.
1. Download all files and folders from the account via ftp.
2. Upload all these files and directories to the new account.
3. Export your database via mysqladmin (old account).
4. Create a new database (new account) and pay attention to the proper collation and charset.
5. Import the database via mysqladmin (new account).
6. Adjusting the file and folder rights (new account).
7. Change the entries for the new database in the file conf.inc.php.
8. if there is a new Domain or folder, change the entries for this in the file conf.inc.php too.