I have made a match up between this one for SME7
http://wiki.contribs.org/ATrpms and that one, which is for SME8 but not complete
http://forums.contribs.org/index.php/topic,45727.msg222676.html#msg222676 I would see this as experimental, before there is not one GURU, who will give his Amen to it.
Enter this all together on the SME Server shell
/sbin/e-smith/db yum_repositories set atrpms repository \
Name 'atrpms - EL5' \
BaseURL 'http://dl.atrpms.net/el5-$basearch/atrpms/stable' \
EnableGroups no \
GPGCheck yes \
GPGKey http://ATrpms.net/RPM-GPG-KEY.atrpms \
Visible no \
Exclude clamav,spamassassin,libselinux,perl-HTML-Parser,lm_sensors,\
perl-IO-stringy,perl-XML-Parser,razor-agents,libgcrypt,rpm-python,\
libxml2,zlib,gnupg,libxml2-python,yum,module-init-tools,rpm,gettext,\
librpm4,glib2,perl-libwww-perl,perl-Convert-ASN1,beecrypt,fetchmail,\
libacl,libtool-ltdl,popt,libgpg-error,freetype,perl-MIME-tools,mutt,\
gd,perl-TimeDate,librpm4.4 \
status disabled
After that you have to update the configuration file
signal-event yum-modify