Stumbled on to the SEAB website. If you are still dreaming your days away. Here's the dates for this year A's, in case you didn't realise.
Don't think they're confirm dates but anyway.
http://www.seab.gov.sg/SEAB/aLevel/2008GCEATimetable.pdf


Can't figure out your subject code?
http://www.seab.gov.sg/SEAB/aLevel/syllabus/school/2008_GCE_A.html

Are you awake yet?