Mmmm,
Am I on the good way using this in the .htaccess of the cache folder?

# BEGIN supercache

AddEncoding gzip .gz
AddType text/html .gz

SetEnvIfNoCase Request_URI \.gz$ no-gzip

Header set Cache-Control ‘max-age=300, must-revalidate’

ExpiresActive On
ExpiresByType text/html A300

redirect 301 /wp-content/cache/supercache/www.pandeblog.org/index.html.gz http://www.pandeblog.org/

# END supercache

Thanks