A SiteWorx account will have the language you specify on the SiteWorx account creation screen. Once logged in, the interface will be translated into that language. To change this default, as well as change the language on the login screen, do the following: You can modify the default language set for all new SiteWorx accounts by editing /home/interworx/iworx.ini. Look for this block:
[iworx.language] ini="languages.ini" siteworx="en-us"
And change "en-us" to the two-letter language code for your language. (Look in /home/interworx/lang/languages.ini to find the corresponding two-letter code for your language.) This will only change the default language for all future SiteWorx accounts. If you have already created a few SiteWorx accounts, you will need to change the language on those manually. However, all new SiteWorx accounts will automatically be set to your chosen default language.