On a further note, everytime I try to enter my server, I receive the message "Connection Lost" and under it says ""The server responded with an invalid server key". I can generally get in my server after a few times of it doing that, but it's just annoying to have to continue to try to connect with it repeatedly doing that. I read somewhere that it probably won't do that with the Minecraft Multiplayer Server update 1.0.1, but I think I only have 1.0.0, because when I run the server, it says "Starting Minecraft Server Version 1.0.0". I've been looking everywhere for the 1.0.1, especially on the main Minecraft.net site, but I the only available server downloads are the .exe and the .jar, and there are no 1.0.0 or 1.0.1 specifications. Where can I download the 1.0.1 for my server so I can test and see if I have this problem anymore?
Much appreciated to anyone who can help a novice server host.
EDIT: Problem solved about the gamemode; I failed and forgot I could change my own individually. I would still like to know about the 1.0.1 though.