Thailand - Visa Service for Myanmar in BKK

Does someone know a reliable Visa-service for getting a (same-day) visa from the embassy?
My time in BKK is very short, so I can imagine to do better things than hanging around at the Myanmar embassy early in the morning.

Try some of the info on this page which was created for the Korean Air Mistake First class mistake fare. It has summarized a lot of the info. Also, if you click around in the thread, many people applied for their visas in BKK and you should be able to get some advice there if you are prepared to mill through the hoards of posts...
http://www.flyertalk.com/forum/18892610-post5134.html