I'm sorta confused by your post. (But, none the less, I shall try to dispense a little wisdom... *Grin*)
The only MUDs I have ever played, were text MUDs. This is significant only, because these MUDs were free to play. I say this, because I'm not entirely sure you have a copy of the game. (Maybe this is me and I just didn't get your post.)
If this is the case, the first thing you have to do, is buy a copy of EverQuest. If you have a copy of the game, creating a character should be pretty simple. You should get thirty days free play, but you will have to give your credit card details, before you can use these. Once you have an account, you select a server and you'll see a bunch of buttons that say 'create character'.
...Oki. I have just looked up Sojourn3. It is indeed a freebie text MUD. Which very strongly suggests the problem is that you're a little confused about exactly what EQ is. so, I shall start from somewhere near the top...
Imagine your text MUD, but with an interface a lot like a first person shooter. This is the essence of what Everquest is. (There's a whole lot more, but this describes the core of the game.)
To play you need to buy a copy of the game plus any expansions you want to play. Additionally, it'll cost you $10 per month, as a subscription.
Here are a few sites with reviews of the game, to give you an idea, before you start handing over cash. Some of these are a little old, but this is because I tried to find you reviews that were appropriate to someone who hasn't played before.
[li][link=everquest.station.sony.com/index.jsp]Sony's official EverQuest site.[/link]
[li][link=www.icelan.com/everquest/part1/everquest_review.htm]IceLan Beta 4 reveiw[/link]
[li][link=www.gamespot.com/rpg/everques/review.html]Gamespot's Everquest review[/link]
[li][link=rpgvault.ign.com/features/reviews/eq1.shtml]IGN's EQ review[/link]
Hopefully, these will help you decide if you want to join us in Norrath.
I hope this helps. See you in Norrath! (Maybe.)
"Te aurdire no possum. Musa sapienum fixa est in aura."