Error - Simple Cache can't create or modify needed files...

[Hanut1]

Trying to install Simple Cache, have this error and can't understand how to configure web server to make everything work.

Error:
Simple Cache can't create or modify needed files on your system. Specifically, Simple Cache needs to write to wp-config.php and /wp-content using PHP's fopen() function. Contact your host.

PHP 5.2.6
Apache 2.2.9 on Fedora