More key and remote problems/questions.

Ok, I did some searching and I could not find a solid answer or a duplicate to my problem so I'll start a new thread to get the questions out there.

I just bought a 9-5. I am having problems with the key not accepted code. I looked it up on here and I found the two main solutions are....

1. Clean out the lock. DONE
2. Hit the unlock button on the remote to override it.

I couldn't do number 2 because the car only came with one key and no remotes. So I called up the previous owner and he mailed me 2 more keys and 2 remotes. I didn't get them originally because he wasn't there when I picked the car up.

Anyways.

Now that I have multiple keys and two remotes here is my problem.

1 key works sometimes
The other keys don't work at all.
The remotes don't work either.

I put new batteries in the remotes, still nothing.

So I was sitting in the car reading through the owners manual and it says after remote battery change hit the unlock button 4 times to sync it. I did so on both remotes still nothing. However.....

When I hit the trunk release button on either remote the SID says 2 keys, 2 remotes on the screen. Does this mean that it recognizes the keys and remotes or is it just telling me that it sees 2 keys and 2 remotes even though they may not work in that car?

So I the hell is going on? I don't even care so much about the key in the ignition problem right now as much as I care about getting these remotes working so I can override the damn thing.

Do I have to take this problem to the dealer?
How much are they going to rape me for it?