SORRY I'm really not getting how to catch rotom can someone please explain..

First you need to have the national dex,then head to eterna forest,inside you will find the old chateau,go to the second floor to the first room to your left stand in front of the tv set and on to battle you go (be careful he is at level 15 and once you catch it thats it no more rotom,unless you use the re-battle a/r code

After getting the National Dex, go to the Old Chateau on the northern edge of Eterna Forest. Gardenia will talk to you and then go inside. Head upstairs and find a room with only a TV inside. Press "A" against the TV and thump it. A Lv 15 Rotom will attack

Hey first of all you have to get the national dex and have had seen all Pokemon right. Then you must visit the house in eterna forest called the old chateau once inside you must go upstairs and go in every room until you see the room with the television then pres A onit nad say yes to the question THIS CAN ONLY BEEN DONE AT NIGHT AND AFTER OBTAINING THE NATIONAL DEX

You go into the Pokemon Mansion at night and press the "A" button on the TV that doesn't work in the morning and Rotom will pop out of it!

You wait till midnight on your games time. You go to the Old Cataeu. You walk into the back rooms on the second floor. There is one with a tv. You press X up against the tv and it will say "There is a Pokemon in the tv. Would you like to see it" or something like that. You say yes. And then Rotom comes out. He is at level 15 and pretty easy to catch. Hope this helps.

To get rotom you have to go to old chateua in the eterna forest and wait till it's night time and go find a tv should be in 2nd floor top door and some where on the other doors once you find the tv press a on it then he'll come out at lvl 15

Get the National Dex, go to the Old Chateau in Eterna Forest. Head upstairs and find a room with only a TV inside. Press "A" against the TV and thump it. A Lv 15 Rotom will attack