Hi Juan,
We don't run CCM 5 yet, but I did find this doc that outlines the procedure required for installing the Locale Installer (CCM 5.0.(4);
Unified Communications Operating System Administration Guide, Release 5.0(4)
Software Upgrades
You can use the Software Upgrades options to perform the following types of installations and upgrades:
Install/Upgrade Use this option to upgrade the application software, install Cisco Unified CallManager **Locale Installers** and dial plans, and upload and install device packs, phone firmware loads, and other COP files.
Upload TFTP Server Files Use this option to upload various device files for use by the phones to the TFTP server. The TFTP server files that you can upload include custom phone rings, callback tones, and phone backgrounds.
From this doc;
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00806c3e39.html#wp1042957
Hope this helps!
Rob