yum localinstall <package-name>
at least you need to download all this package and install it manualy
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Package Arch Version Repository Size
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Installing:
smeserver-phpmyadmin noarch 3.5.2.2-2.el5.sme smecontribs 8.8 k
Installing for dependencies:
libmcrypt x86_64 2.5.8-4.el5.centos smecontribs 105 k
php53-mcrypt x86_64 5.3.3-1.el5 smecontribs 17 k
php53-php-gettext noarch 1.0.11-3.el5 smecontribs 20 k
phpMyAdmin3 noarch 3.5.4-1.el5 smecontribs 6.0 M
Transaction Summary
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Install 5 Package(s)
Upgrade 0 Package(s)
they are in
smecontrib for sme8, you need to choose your achitecture