Guys
The best sectors in Singapore for expats at the moment are IT and Banking....
You can try
http://www.jobs.com.sg/
This is a good base from which to start your own searchs.
Unfortunately I am not in these sectors and as such don't know the good agencies for them - My work is on an invitation only basis...
You can also try the forum at
www.singaporeexpat.com which has some good leads for these sectors as well...
Best of luck - If you need help on a more fundamental nature in terms of once you know who you are looking for and want some more info or the likes give me a shout...
