After a few conversations with UNECOM admissions I became very interested in going there and inquired about an early decision program.
I was told that they did not have one, but was strongly encouraged to apply almost a full two months before what they publish as their admission process start date (begins in September for following June class start). As the other poster mentioned, it's easier when all the seats are still available.
"apply early" seems to be the univeral axiom for increasing your chances...well, after the universal axiom, "smoke the MCAT".
Ock