Quick questions to hopefully save myself having to read through all of this thread

I've pre-ordered the SE from play.com
I have received an email from them containing my Early Access code and also my In-Game Item code.
I gather as an SE purchaser I can register my codes from 8:00am, Monday?
To "Early Start" I obviously need a copy of the game on my machine as the box won't arrive until the 18th.
I am currently downloading the Beta client as found here:
http://www.fileplay.net/files/mmo/war/beta
Once I've downloaded and installed this - this will patch to the client I need to actually play?
Ta