[collectd] Add apache in collectd

[Braindead]

Hello,
 
I've got a server on OVH network. It's running under Gentoo 32 bits, and i
wanted to add apache in reports.
 
So i edited the file :
/etc/collectd.conf
 
and i removed the comment (#), but then i can't restart collectd ?!
 
Do you know how can i do it ?
 
Thanks !