Problems signing into the Elder Scrolls Online Beta...

I downloaded the Windows client and am trying to sign in... but it says my user ID is incorrect. I am positive that I'm typing my user ID and password correctly. What's going on? I just wanted to try this game!!

Doesn't start until Friday at noon.

@BSC14: Thanks, that makes sense then! :)

Yep @BSC14 is right. The beta starts on Friday, February 28th at 12:00PM EST until Sunday, March 2nd at 11:59PM EST.