I did it with skydive sg in 2002. Back then there was no AFF so have to do a series of jumps. I did the 1st lesson that consist of 2 static line jumps at 4000Ft only. Similar to this course: http://www.skydivespain.com/RAPS.htm
But I saw some senior jumpers failing certain stages.
i'm actually planning to have one experiences with couple of friends, but of cause it doesnt come cheap..as i know skydiving is not allowed in singapore, nearest would be msian or indo..