Bicycle Tutor

I took the handle bars and fork off when I boxed my 2005 Wahoo for a big move, but now I don't know how to put it back together. I have three black rings but I don't know where they go. Are there schematics for these things online?

Can you post photos? I assume you took apart the headset. Easier to describe what order things go in if we can see the parts.

If, as DaveM says, you have a threadless headset then this video may help:-
http://bicycletutor.com/adjust-threadless-headset/
First I would assume that you have the bearings in correctly?
The three rings probably go on under the stem as can be seen in the vid'.
If you want to lower the height of the stem, you can put one or more of the rings above the stem.