If you are talking about "Moo" (mud object oriented), like Miriani or Humanity Moo then I can possibly help, since I am also learning MOO.  First off, you code on the server, not like in Visual Basic or C where you type code and then compile it, you enter the code into the server, usually line by line. They run on servers, and there are many, most people, including myself reccomend LambdaMoo server. A good place for hosting, free and paid is moocowpenguin.net . To learn Moo, here are a few sites:
1) Moo-cows.com: They have a mailing list, articles, tutorial links and much more
[Moo-cows links to the following 2 terrific sites]
http://www.fringenet.net/MOO/
http://www.hayseed.net/MOO/

Also MOO is quite different from BASIC, it's OOP (object oriented). It's based off of C and LISP. It's very different, in my opinion. For example, when you wanted to tell the user something in Basic you'd write:

Print "Hi, I am telling the user something"

.
In MOO, it's

player:tell("Hi, I am telling the user something")

It also is much more powerful then BASIC, and what it's best for: social interaction, as many of you enjoy in Miriani, such as communicators, stunning, etc. For most of those, you use socials. Personally, I like creating socials on the $player flags, but that isn't "proper", wink. Here is a quick example of telling player, and announcing.

player:tell("You, ", player.name," pick up an item");
player.location:announce(player.name, "picks up an item");

Of course you would have to make those verbs, but that was a quick example a basic function in BASIC and MOO. I'm sure those tutorials will be much more informational then I am.

You need to code it on the server, that I know of. You can always recycle it when you don't want it (or edit it).

How many players can I have connect to it? I know it saids that I can have two shell accounts what ever those are. Also, How can I best keep it from going over the 200MB Thing?

Are there any code librarys that I can use? Like if I wanted a ship, then I would copy the code from the library and make the needed changes. I'm not planning on coppying from anyone elses hard work, but if there something that is being used by everyone that someone put for all to use?

Hmmm, It seems like it would require alot of code for what I am planning. Is there any code floating around that I can learn from? Would it be better for ne to try my hand at tads first? If I do this, would it be hard to port it over? I'm the type that has to type something and see what it does and I like to look at the code to see how things like ships and or rooms are done. In the game I'm wanting to creating a few spaceships along with sailing ships along with cars and trucks. I'm trying to create a world where just about anything is posible. A world much like ours, but different in a few ways.

Not to start a flame, [the culprit] begged to get wizard flags. It got so bad, that he directly copied code into his moo, without even modifying player:tell commands. Right, normal player's can't steal code. The culprit, has his way of getting what he wants, through force, begging, etc. I find it almost surprising what he has managed to take from people.  To get code, you can do a simple list [object] or [object:verb]. Also, the bigger problem is, Mike was not aware (under the impression he would help, which he didn't, the culprit has just a jerk), nor was the culprit going to give credit to the correct coder's, which were usually Mike. It was such a clone, that when Andy was playing his MOO, I asked (after seeing familiar commands, player:tell's, socials, etc.) did you buy a starship. (I assumed he was playing Humanity Moo since it's basically a clone). So, he didn't even have the respect for Mike and the other wizards to remove all the code he stole, (which would essentially give him room's with not many verbs or objects). The culprit has stolen code, not just from Humanity, but from others, some of the time, telling him he was the original programmer.

I plan on giving credit where it is due. Surviver ey ryan? Anyway this seems to be one of those projects that will take months if not a few years. Is there any design issues that I should think about? How about connection ports, like port 80?

Port 80 is probably not a good choice, that's the standard port for HTTP. I think more often than not mud/moo games seem to use 4000, though almost all ones I've seen use a 4 digit port.

You can obviously have more than one player connected to the port, but you can't actually have more than one type of service using the port. For example you can't have say two moos on the same port at the same address, or have a moo and an email server. The server has to know which software the port is being used for.