When you queue for a random heroic, you don't need to unlock the Burning Crusade heroic dungeons. However, if you want to enter on your own (or with a group on your own) then you will need to buy the corresponding key from a rep vendor.
Each faction sells one key, obtainable at Honored or higher reputation
Honor Hold/Thrallmar have the key for the Hellfire Dungeons in Hellfire Peninsula
Cenarion Expedition has the key for the Coilfang Reservoir Dungeons in Zangarmarsh
Lower City has the key for the Auchindoun Dungeons in Terokkar Forest
Sha'tar have the key for the Tempest Keep Dungeons in Netherstorm
Here are the races and classes:Races (ALLIANCE)Human Male/FemaleDwarf Male/FemaleNight Elf Male/FemaleGnome Male/FemaleDraenei Male/Female *YOU NEED TO HAVE BURNING CRUSADE*Worgen Male/Female *YOU NEED TO HAVE World Of Warcraft Burning Crusade Wrath Of The Lich King and Cataclysm ALL OF THE EXPANSIONS TO UNLOCK THE WORGEN*End of alliance RacesHorde Races:Orc Male/FemaleUndead Male/FemaleTauren Male/FemaleTroll Male/FemaleBlood Elf Male/Female *YOU NEED TO HAVE BURNING CRUSADE*Goblin Male/female *YOU NEED TO HAVE World Of Warcraft Burning Crusade Wrath Of The Lich King and Cataclysm ALL OF THE EXPANSIONS TO UNLOCK THE GOBLIN*CLASSES: FOR BOTH HORDE AND ALLIANCE MALE AND FEMALEWarriorPalidinHunterRougePriestDeath Knight (Requires Wrath Of The Lich King Expansion)ShamanMageWarlockDruid*ALL OF THEM ARE INCLUDED IN THE WoW Expansion Classes except the Death Knight*
If you mean the Draenei, it is unlocked, along with the Blood elf, when you add the Burning Crusade package to your gaming experience. If you mean the last class, Death Knight, then you need to buy the Wrath of the Lich King upgrade package and get a character to level 55.
you start out with him
Heroics are meant for level 80 players only. If you are below 80, you can not do a heroic.
yes there is and you have to unlock it by completing certain achievements
No, you only have the ones available.
Tell the blizzard ppl to stop being mob
You don't unlock the XP/reputation bar. It can not be moved unless you use an addon to move/resize it for you.
finish classic mode with Ness or Lucas
You have to play classic mode and adventure as tails
You do not 'unlock' anything in Warcraft III story related. They come naturally as you continue through the game. However, I am sorry to inform you that if you do not own the expansion to Warcraft III: Rain of Chaos, you cannot play the Human campaign with Arthas found in Warcraft III: The Frozen Throne. You can purchase The Frozen Throne at a local store in the popular 'Battle Chest' box, or order it online.
There is nothing to unlock in RFC. its an lowlevel instance (13-20) You can run it with friends or the LFG system for loot and exp.