you are right.. I do need a schengen visa, but my concern is that i need multientry to trukey itself as i have to enter the country to get my europe flight boarding pass (i travel with budget airlines). so onward and my return journey transiting through turkey (with 5 days stay in Istanbul, one way) necessites multiple entry visa. if i have a connecting flight i dont need to pass through immigration or enter a transiting country to get my connecting flight boarding pass.. i had a terible experience in south east asia with this budget airlines connecting bali. so dont want to go through it again...

appreciate your response boer.