esposé 4

[marcelo tufaile]

tenho a galeria exposé 4 em minha home, porem de alguns dias para cá simplesmente ao tentar entrar no administrador para colocar login e senha , aparece esta mensagem de erro,

Your system dose not meet the SYSTEM REQUIREMENTS to run the Expose config section.

expose/img/ folder is NOT writable. please set the correct permissions.
expose/xml/ folder is NOT writable. please set the correct permissions.
Password file (expose/manager/amfphp/extra/passhash.inc.php) is NOT writable. please set the correct permissions.
expose/config/ folder is NOT writable. please set the correct permissions.

alguem pode me informar o que devo fazer para corrigir isto?