RESOLUTION
For Sitebuilder 2.x:
You can translate the Sitebuilder interface into a language you wish. In this case you need to create your own language pack. To be able to make your own Language Pack you need to copy the folder SITEBUILDER_ROOT/htdocs/localize/en_US
(e.g. to SITEBUILDER_ROOT/htdocs/localize/Dutch), translate all files in that folder and modify correctly SITEBUILDER_ROOT/htdocs/localize/Dutch/info.xml similarly as it done in SITEBUILDER_ROOT/htdocs/localize/en_US/info.xml file. SITEBUILDER_ROOT - Sitebuilder installation directory, /usr/local/sitebuilder/ - by default.For Sitebuilder 3.x:
If you do not find a required language pack in the list of supported languages, you can create your own language pack with help of localization guide and kit: http://swdn.swsoft.com/r/localization/sitebuilder-3.0-unix-localization-guide.pdf
http://swdn.swsoft.com/r/localization/sitebuilder-3.0-unix-l10n-kit.zip
If you do not find a required language pack in the list of supported languages, you can create your own language pack with help of localization guide and kit:
For Sitebuilder 4.1:
If you do not find a required language pack in the list of supported languages, you can create your own language pack with help of localization guide and kit:
http://download1.swsoft.com/SiteBuilder/4.1.0/doc/l10n/en_US/sitebuilder-4.1-unix-l10n-guide.pdf
http://swdn.swsoft.com/r/localization/sitebuilder/sitebuilder-4.1-unix-l10n-kit.zip
For Sitebuilder 4.2:
If you do not find a required language pack in the list of supported languages, you can create your own language pack with help of localization guide and kit:
http://download1.parallels.com/SiteBuilder/4.2.0/doc/l10n/en_US/sitebuilder-4.2-unix-l10n-guide.pdf
http://swdn.swsoft.com/r/localization/sitebuilder/sitebuilder-4.2-unix-l10n-kit.zip
Additional information
If mentioned links do not work try to find necessary guide and kit here:
http://swdn.swsoft.com/en/extensions/localization/sitebuilder/