Please read...

Im a n00b at map editor, so excuse me for the lame questions but the tutorial for the map editor gives doesnt say.. so I have 2 questions...
1:How do you change what the players start off with(i.e. Red starts off with a hero, instead of the building and 5 peons)

2:When you place down a undead building, the terrain thing that undead needs to be able to build on in melee maps, or like if you step on this "floor" or "carpet" then you regen health quicker.... how do you make it go away?

In response to your first question:

one of two ways: you can place units for the players in the Map editor window using the Units palette, or you can add actions that run at Map Initialization and create units for the players.

In response to the second question:

If I understand what you're asking, the "carpet" you're referring to is called "blight." You can create and remove blight in the Map editor under the Terrain palette. You can also use triggers and the "Environment - Create/Remove Blight..." actions to effect changes in-game. In addition, all units with the "Aura of Blight ability" will create blight in a circle around them when they are created, and all units with the "Blight Dispel" ability will remove blight around them the same way.

Hope this helps!

To alter that a player starts with a town hall and workers for the race they started with, you need to delete the default trigger 'Map Initialization - Create starting units for all players'. Then you either preselectively create buildings in the map, or, if you want them to start off with new buildings based on race, you'd need to use triggers that use 'If'.

To remove Undead's dependance on Blight, you need to do the following..:

-Edit each undead building, and remove the 'Blight Create' abilities.
-Edit each undead building, and remove 'Blight' from the Building Requires field.
-Edit each undead building, and change their 'ground texture' from the undead textures to something else. It's not big, but it makes it not look like blight.
-Edit each undead unit, and change 'Regenerates' from 'Only while on Blight'. If you set it to Always, it's a good idea to chop down their regeneration rate so they don't become too powerful.
-Remove the item Sacrificial Skull from the Tomb of Relics. It's not big, but if you're eradicating Blight you got to get rid of this.

I'm certain I've forgotten something, but I can't think of it right now. Ah well.