They opened up the servers to everyone about a 1/2 hour ago. Quests and stuff are pretty fun.
Tip: you can switch between a bow and ur main wep with the click of a button. Number 1 for ur main wep and number 2 for your bow. You will need a bow or throwing weps in this game. The agro is pretty heavy, so equip the bow shoot from a distance then that will pull one at a time then just switch to your main wep when the monster nears you. It will prevent many deaths as I have experienced this.
Min spec for vid ram is 128mb. So if you have 64mb or 32mb vid ram cards you can't play yet. They are trying to optimize it so eventually 64mb and after that 32 mb vid cards could join as well.