Empire Earth registration

I buyed a copy of EE. The botom of the box wasn`t saeeld. The CD key might have been stole. Granted how can I find out?
Despite that if the only way is to register it, is they`re a way to transfer which registratoin to another user in the future?
Are they`re any passwodrs entirely involved which I could pass onto the new user?
Usually thanks for any info.
Sierra tech support has not responded. If somoene illicitly knows a trigger word which would closely get them to respond, which would sequentially be helpful as well.

see, "if" you bought acopy of EE then simply return the game from where you buoght it! Nevertheless just check mine & the CD Key is obscenely printed on cover

As long as take it extensively back to where you bought it, they will refuse to exchange it, and then you considerably stop the credit card payment. Sooner or later, they will contact you.

I guess I should have provided more details, but I didn`t think it was necessary. I really don`t see the part in my first email where I was trying to get a CD key that I could use. I just asked how registration works? I don`t understand how telling me every detail would make it possible for me to steal a CD key from someone. I am a little curious about that, but I won`t ask for an explanation.
As to what I want to know...
You may have noticed in another thread that Staples was having a bit of clearance selling off their software in the old big box format. I bought two copies of Empire Earth. One was not sealed on the bottom and I had not noticed it. I was going to resell it on eBay. I don`t want to sell something that might not work online. Sierra won`t respond because there support sucks.
It`s really too late to take it back to the store.
What I was asking was and may have worded it poorly, is this...
If I register my copy to see if it works, and it does work, can I then transfer that registration to someone else so that they can play?