Can I two accounts off 1 WoW copy?

Q u o t e:
Hey guys, I used to play WoW, 5 years ago and am looking to get back into it. I have a brother that wants to play as well. My question is am I able to buy just one copy of WoW, burning crusade, and WOTLK, and just create two seperate accounts? If I do this, will my brother and I be able to play at the same time? Or do I need to buy two copies of everything?

Just want some input before I go and drop 100 dollars on something I might not need.

Thanks

Welcome back, Fruid!

If you previously had an account with us we may be able to assist you with recovering it as do not delete accounts or characters due to inactivity.

Once you reactivate the account, you can send your brother a Recruit-A-Friend invitation. The Recruit-A-Friend program has some awesome in-game benefits such as triple experience, level granting, and summoning. Once your recruit pays for 1-month of subscription time, you will get 1-month of subscription time free as a reward; when they pay for 2-months, you will have the opportunity to redeem the X-53 Touring Rocket Flying Mount.

Take a look at the FAQ for further details:

Recruit-A-Friend FAQ
http://us.blizzard.com/support/article/RAFFAQ