Two ways:

1. Locally at : http://www.gamers.com.my/

2. Or from www.cdromshop.com where they will need to verify your CC via fax.

Method 1 is expecting shipment later next week

Method 2 fast, pay the extra but they can open the box and give you the retail key.

Some of us used Method 2 cause we pre-ordered and had no disruption since the headstart event while others are still waiting for their box

Let me try address some of your questions

Content

Like Guild Wars most of the quest are instance. That is you go with your group into a dungeon and its just your team and the NPC mobs. Unlike Wow there is a mixture of both. The quest are repeatable going from normal to hard to elite but after a few repeats there is a penalty. Interaction with other players is done at the tavern or in the zone you are in.

Gameplay

Unlike Wow and EQ it is very action based. You have the opportunity to tumble and block your enemies and the target does not have to be auto lock. i.e. you can use the tab to target or you may use your mouth and aim the recticle over the mob much like a FPS or a console game. Its open-ended in the sense as a caster you could bring different spells to different instance which can only be done when in a tavern or at a rest shrine (shrines are located in a dungeon and used to regain health or mana or both, and can only be done once)

Hours played

Depends some quest are long like the Waterworks which is an arc story in itself and leads you to unlock another area. Others can take as long as 10 mins depending how fast you are. Its is very much a casual game but bear in mind the only time consuming part is finding a party as the game encourages group play rather then solo although some classes some people have claimed is solable. That being said the longest I have had to wait for a group has been 5 mins since I was a cleric. Most essential in a group are a rogue, cleric and one type of fighter although I have done it with 3 rogues before one tanking the other 3 backstabbing or sniping. The quest are very intresting and the story is enhanced by the Dungeon Master telling the story as you move along the quest.

And yes to gain the exp. you need to finish the quest, unlike in City of Heroes or Villians you could go in gain exp. then go out. That being said completing the quest is not that long in general (Please note I haven't reach the high end dungeons yet)

There is a built in mic in the game which allows communication via voice rather then typing which does help on ocassions particularly when it gets hot but not necessary. If you don't have a mic you can always listen to the instructions from someone who has a mic

Hope that helps you answer your questions