I've followed the steps in the CentOS HowTo, that where pointed to work with this release from RH...
But I get a strange message telling me that the RPMS aren't found by the installation :
Operations logged to /tmp/install.log.3827
Checking for existing installation...
zimbra-ldap...NOT FOUND
zimbra-logger...NOT FOUND
zimbra-mta...NOT FOUND
zimbra-snmp...NOT FOUND
zimbra-store...NOT FOUND
zimbra-apache...NOT FOUND
zimbra-spell...NOT FOUND
zimbra-core...NOT FOUND
PLEASE READ THIS AGREEMENT CAREFULLY BEFORE USING THE SOFTWARE.
ZIMBRA, INC. ("ZIMBRA") WILL ONLY LICENSE THIS SOFTWARE TO YOU IF YOU
FIRST ACCEPT THE TERMS OF THIS AGREEMENT. BY DOWNLOADING OR INSTALLING
THE SOFTWARE, OR USING THE PRODUCT, YOU ARE CONSENTING TO BE BOUND BY
THIS AGREEMENT. IF YOU DO NOT AGREE TO ALL OF THE TERMS OF THIS
AGREEMENT, THEN DO NOT DOWNLOAD, INSTALL OR USE THE PRODUCT.
License Terms for the Zimbra Collaboration Suite:
http://www.zimbra.com/license/zimbra...al_license.pdf
The log file is just empty so I can't get anything from it, and after this I get this message :
ERROR: Installation can not proceeed. Please fix your /etc/hosts file
to contain:
Where is the ip address of the host,
is the FULLY QUALIFIED host name, and
is the (optional) hostname-only portion
Here is my hosts file right now :
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost botagroupw
192.0.0.8 botagroupw mail.botanique.be
::1 localhost6.localdomain6 localhost6
Help would be cool 
Thanks...