World_Nether as normal world

Title says it all, is it possible? Have world_nether be like the normal world?
The nether portal will tp u there? Everytime i replace world_nether with the normal world
the nether re-generates.

 

Why not just use a multi-world plugin like MultiVerse and create a new, normal, world?

 

So its not possible? OK : /

 

Set spawn in the Nether?

 

You may have mis-understood me, i want the spawn to remain in world1 but world_nether will be a normal world, like world1 .

 

Ah, you should clarify a bit more

And no, you can't change the Nether file. Minecraft itself generates and saves the Nether. Your best option is to use Multiverse (it supports portals too).

 

What version should I get?

 

Assuming you're on CB 1337, you'd want to get the latest version of Multiverse.

 

What about the multiverse nether portals and other..

 

Depending on how you want it to work, you can install whichever other plugins you want. The one that I linked you to is the Core plugin. The others (Portals, NetherPortals, and SignPortals) all depend on the Core plugin. Install just the Core plugin, or install them all. Although I would recommend at least one of the others, to make it easy for your users to get from one world to another.