+// CFG: CAPTCHA-ENCRYPT-VALIDATOR-CLASS
+$cfg->setConfigEntry('captcha_encrypt_validator_class', "CaptchaEncryptFilter");
+
+// CFG: CAPTCHA-GUEST-VERIFIER-CLASS
+$cfg->setConfigEntry('captcha_guest_verifier_class', "GraphicalCodeCaptchaVerifierFilter");
+
+// CFG: CAPTCHA-USER-VERIFIER-CLASS
+$cfg->setConfigEntry('captcha_user_verifier_class', "GraphicalCodeCaptchaVerifierFilter");
+
+// CFG: CAPTCHA-REGISTER-VERIFIER-CLASS
+$cfg->setConfigEntry('captcha_register_verifier_class', "GraphicalCodeCaptchaVerifierFilter");
+