Registration will be 1-31 May 2013 for 9 September written exam.
http://www.un.org/exam/lpe/welcome/main.asp

Registration is now open in our courses for the April - July term.  They close 26 February.
http://learning.unog.ch/TrainingDirectory/Languages/Courseofferings/tabid/665/language/en-GB/Default.aspx
Go to English Specialized Courses description to get the following information:

::: Advanced English for post level 9 students ::: (C1 level and above)

                               

Course	Language Proficiency Examination Preparation course
Course	Language Proficiency Examination Preparation course
Target audience	Those who are post level 9 or equivalent (C1), wishing  to prepare for the LPE.
Description	The programme helps students develop exam techniques  and includes working on the main skill areas:  listening,  speaking, reading and writing.  Students also consolidate  their vocabulary and grammar knowledge.  The topics will  be those frequently encountered in a United Nations context.   The course also includes an individual recorded mock oral  exam with feedback.
Duration	Equivalent to a 48-hour course.
Schedule	2-hour workshops once a week and individual practice for the  oral exam.
Contact point	Sarah Jordan (sjordan@unog.ch) or  Carol Waites (cwaites@unog.ch)