Which airplane may I ask?
If in case of A320, the only JAA approved sim that I know of is owned by Boeing, but it is not offered to individuals, only to companies. Anyway, I wouldn't know where to get a JAA TRI for the A320 at those latitudes.
If you find everything and the documents are properly filled and signed in the DGAC shouldn't give any headache.
But of course, don't forget who you are dealing with, most probably they will not know where Singapore is...
