To upgrade your SiteBuilder you should:
1. Download installation packages from our site.
2. Unpack it to some directory.
3. Run 'sb_install' installation script in the directory or use following command:
#rpm -Uhv *sitebuilder*.rpm
4. Open http://sitebuilder.<some your domain>.tld/install/install.php
5. Fill in post-install form with valid administrator MySQL values and submit it.
Please remember that post-install form should be field after every installation or upgrade.