Unable to play Super Smash Bros Brawl.

[Stevis]

I searched, and didn't find anything corresponding to my problem. It's game ID RSBE01, region NTSC. When I try to boot it from the Dolphin menu, I get the following screen:

http://img505.imageshack.us/img505/7347/rsbe011.jpg

I'm sure it's an easy fix, since I see people posting about playing SSBB on here.

My computer:
Windows 7 x64
Core 2 Duo E8400
4 GB DDR2
8800 GTS 512
Dolphin SVN r.3286 x64

Thanks for any help.