euhm i found the delete thing
but euhm when i want to make a teleport i have to change classname right? well when i do that every little fucking brush starts to turn his or her dunno clasname in it to wtf now?
tzeleports jah !
You’re probably trying to change a ‘worldspawn brush’ (aka regular brush) to another class?
First make an entity out of the teleporter, like func_group, and then change the name.
(You could allso look for the updated entities file, you can convert a brush to a teleport much easier that way)
euhm plz explain the func_group more like where do i put it or i dont know exactly what i have to do 
Normally, you select a set of brushes that aren’t part of an entity yet. (other than worldspawn)
Then you can convert those into an entity by opening the entity window and doubleclicking on a certain entity type.
If you haven’t got the teleporter, you choose func_group there. And then you can change the classname key to another value.
More info on converting brushes into entities can be found in the GTKRadiant manual. 
If you just want to make a simple teleport do the following:
1.Create a brush, maybe a square, a cube or something.
2.Press shift down and select the brush.
3.Go to textures, choose common, and choose trigger.
4.Now find your brush from a 2D window, doesn’t matter which one.
5.When you have found it right click inside the brush(click in 2d-window still) and choose trigger_teleport.
Trigger_teleport is the ‘teleport’, you will need to define a destination. Right click in a 2D window and choose misc_teleporter_dest.
Now you have a teleport and a destination, but that will not be enough. You need to ‘connect’ them to each other.
This is how you do it: Select the trigger_teleport brush and AFTER that you select the misc_teleporter_dest(a flat red square) and finally press CTRL+K.
A red line with some arrows should appear.
ok got it to bsp it just -meta or? havent got any lights only brushes and teleports (spawns duh)