Need some help with NifScope and modeling advice

[stars2heaven]

What I want to do is very simple, atleast it sounds very simple to me. I want to take vanilla cave interior meshes that have a floor and a ceiling and separate them so that the floor and ceiling can be used independently of one another. This will allow me to greatly diversify the caves Im making by giving me the ability to make multiples of levels within a cave, using different ceilings and floors together that normally cant be used together. In Vanilla, you can only make 2 levels Im pretty sure, and while most seem like they would look good if used together, they cant be used together because the ceilings dont fit.

 

I've been messing around in NifScope for a while, trying to figure it out. It's just too complicated without a guide. But Im not having any luck finding a reasonable tutorial either.

 

Is there anyone here who might be able to direct me to a guide of some sort that would show me how to accomplish what Im trying to do?

[alex2avs]

while in edit mode (in blender) select the parts that you wish to be separated , then press P ->separate.

 

then you'll have to redo the collision and export the parts as nifs.

[stars2heaven]

I guess I was in the wrong program all together, lol. Thanks.