YiasEdit/Noggit 3 help request!

[Builtokill]

I've very recently got into model editing, and would really like to start some world editing.
I'm having some trouble with both these programs.

Yias:
I get only grey when I open up an ADT.
I know there have been like 10000 questions exactly the same, but I have already downloaded directx. so my question:
DO I HAVE TO INSTALL IT SOMEHOW OR DO ANYTHING ELSE WITH IT OR PUT IT IN A PARTICULAR PLACE?

When I try creating new ADT's, the space where they are supposed to be is black, and when I click where they should be in the starting screen nothing happens. Someone said I had to put the "World" folder into a "save" folder in the YiasEdit folder, but there isn't one.


Noggit3:
I am using windows 7 64 bit, and when I click on my custom created ADT's there is no texture, or terrain; just brilliant white. Does anyone know a way around this?

[spoiler][/spoiler]

and when trying to texture, raise or lower:
[spoiler][/spoiler]

Thanks in advance
regards

Builtokill