Teamspeak is separate from World of Warcraft. To get a server you will have to pay a monthly fee depending on how many slots you want. Search the internet for a Teamspeak host and purchase a server. I think Ventrillo has better voice quality but that is my opinion.
Only if you know their server and character name. A better way is to both be on ventrilo or teamspeak - you get notice they are on that no matter what realm they are on.
A private server on World Of Warcraft is just that, a private server on World Of Warcraft.
You have to go make a private server which you run = How can make online server for world of warcraft? =
Teamspeak is a 3rd party program, similar to Ventrilo and Mumble. In general, you install them and use the server info given to you by your guild (or your Teamspeak Host if you rent space from them) to enter the server. Then, you set up the Teamspeak preferences, where it's good to turn on "Push to Talk" and choose a key. As long as you hit that key your speech will be transmitted, else nothing. This helps to prevent you from constantly transmitting your breathing, or comments you do not wish to share. As for Hardware, you will need speakers + microphone, or a headset (which features a microphone) to be able to speak and hear. For more detailed, or technical, instructions - visit the relevant website for Teamspeak, Ventrilo or Mumble.
You have to be using Teamspeak or Ventrilo - otherwise you need the game to talk to others.
A Retail World of Warcraft Server costs money. In the USA it is $15.00 a month +Tax and you have to buy the games and get an account. Once you get a subscription and buy the games you then can Connect to a Retail World of Warcraft Server.
There are no cheat codes in World of Warcraft. WoW is a client-server game.
Get a Repack on Youtube
It depends which Server
It depends how one defines top but the World of Warcraft private server ranked the highest is Molten. It is a free private server and praised for it's lag free experience.
The equivalent of Story Mode on World of Warcraft would be playing on a Roleplaying (RP) Server!
WoWMortal is a World of Warcraft Private Server