Group starting dates
Wednesday Nov 24, 2010 (3 months)
Wednesday Feb 23, 2011 (3 months)
Wednesday May 25, 2011 (3 months)
Wednesday Aug 24, 2011 (3 months)
Then starting every 3 months (3 month commitment)

Info on Cambodia
wikitravel.com
uk.oneworld.net
phnompenh.gov.kh