Is the online server still up or something? I was never able to get my game online, and it always says that "Could not log into the routerThe client is not compatible with the server (ERR: 50)"

Anyone know what that means?

I read it, and now I have a new problem. Now it asks me for the CD Key number or something. Where can I find this

That's messed up. I don't even have the case anymore. I had the game for a long time, and I lost track of the case.

So that is the only way I can get online?

Nah, I've got the game a long time ago and I lost the case. And judging by your post, I'm guessing that I can't get online.

Oh well, I'll just get the newer game, but I doubt my comp can handle it because it barely handles this game.

It sounds like you don't have the latest patch installed. There are 3 patches, which need to be installed in order.

Here's the link where you can download them:

http://patches.ubi.com/chessmaster_10th_edition/

Please note that there are 3 versions of the patch (US, UK, and French). Make sure to download the one that matches your version. The Help About screen will tell you which one you have.