HOW DO I MAKE HL2 TRAINS WORK

ok, i have made trains in hammer 3.4 plenty of times, and i dont see why i cant now. I have a train and path_corners to tell it where to go. My first idea was for the train to be activated when the map began. After 2 hours and permanent scars left in my sanity, i gave up. Now i just want to press a button (which i know how to make) and have the train go. I made a prop_physics model of a button, and around it i made a func_button brush. Now when im in the output tab, i can target the train but i cant make it start, my only possible options are "stop" and "toggle". I thought maybe i had to click "start off" as one of the trains flags but that isnt there. Please help.

PS: i also cant seem to get a turret_ceiling to "attach" to the train using parent, if some1 could help with this thatd be cool too.

http://www.snarkpit.com/forums.php?forum=6&topic=2586&highlight=trains&findpost=56291#post56291

Read it.

thanks, sorry i didnt find it when i searched, will make new thread for my turret question.