From the new bus station in Hua Hin you can get a VIP night bus leaving around 1900 hrs to Surin for 800 Baht from Surin to Prasat jump on the old Korat bone shaker half hour journey 60 baht from Prasat bus station to Kap Choeng jump on a baht, bus 40 baht half an hour.
In Kap Choeng is the immigration office do your papers there and jump on another Baht bus to Chong Chom about another 20 Minuits 40 baht.
At Chong Chom their is a border market and a casino in the nomansland between the two sets of gates.
Kendo.

Is Bangkok a place or a nasty injury.......Eric Morcombe.
Proud to be a Southampton FC Fan.