Eddiedemarco,
True that Malaysian Taxi's are horrible and will probably overcharge. And the taxi touts at the KLIA are actually illegal. Anyway, you must go to the Airport Taxi Counter at the airport just after you clear customs. Here you arrange a taxi and pay at the counter to get a coupon to take outside and wait in line for a Taxi. The prices are fixed according to where you want to go. Subang Jaya from the airport which is near Subang Airport costs RM$50. So WMSA where you want to go would probably be a bit more. You can choose Limo taxi (bigger car) or Budget taxi (normal car and just as good) Go for budget I suggest. You may have to que after you take the coupon and go outside but it doesn't take long. So the airport taxi is a standard rate safe way.
Or, the way Sultan Ismail described is also an option for you.
Or, you can just talk to the taxi touts that will come up to you when you exit in to the public area. As for their price which you can negotiate to Subang Airport, I don't know at all. But good luck with them!