1 will the dungeons be big? i hope so! i really like exploring & finding new enemies tresure ;D

2 will the dragons be hard to kill?

3 when are we going 2 see any character screens???

4 last do u think the quests will be complicated?

Fixed the title for you. ]

However, I think if you read through some of the threads here, you will find a LOT of info related to the questions you have asked. A lot of thread provide links to articles about Skyrim which provide tantalizing hints about dungeon exploration. There are screen shots on the elderscrolls site itself, and have been linked to from Bethblog etc. In other words, there is a lot of information about Skyrim.

To all questions: yes.
even 3

They are bigger than you.

Yes they are if you attack one you better have the level and the shouts needed to take it down.

When they feel like it

No more complicated then Morrowind or Oblivion.

1. varying sizes I should imagine
2. not easy, but always fun
3. who knows...
4. some will be more complicated than others

I answered all of those with just my common sense! lol - just out of interest, did you try that?

1 - Too many big dungeon actually becomes a pain.

2 - I hope, but no to the point where I have to reload about 6943287 times before I even land a proper hit on him let alone kill the bloody thing.

3 - In about a month or so, I think.

4 - I want them to be interesting.
Complication =/= Better.
Still, I prefer overcomplicated quests instead of over oversimplified ones, but that's just me.