Okay, so I've been searching ALL over trying to find out how to create Hotkeys for this game, and I can't find anything. I want to create hotkeys for "Dispose of Corpse" or "Take All" but I don't know how to do that. I REALLY don't like having to click around on stuff to do that. I just want to be able to hit "1" or "2" and take all the loot, or a way to just click an item and auto-drop it, or auto-deposit it. Instead of dragging and dropping

On another note, I'm tired of having TWO items and having to click it, and then click whether I want one or two. Can I set the default on that to like, 5-6 like it was in the X-Box version?
Let me know guys!

These types of Hot Keys cannot be made in the normal version of the game. You would have to use MWSE (Morrowind Script Extender) to create them.
But there already mods that can do some of what you want. Keep in mind they do require MWSE.

http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=5379
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=5168

So as you see, what you want is possible, but the Scripts just haven't been created by any modders yet.

Hold down ctrl when you click on a stack of items to select all. You can also hold down shift when clicking to select just one. That functionality is already part of the stock game.