Looks like your account has already been approved for translation. If you have any questions someone around here should be able to help you.
I am not sure anyone is working on a Hebrew version (do not see it in the list of localizations here: http://translate.openacs.org/ )
I think you will need to add Hebrew. General info is here:
http://translate.openacs.org/getting-started
I am interested to know how the interface works out for Hebrew (so far the only right-to-left language we have is Arabic). Please post any related bugs.