[Wine] Wine Java Error: Cannot find "winemenubuilder.exe"

[Miao]

Alright, so, I am trying to run a shimeji on my Mac. Shimeji's are these cute little animated characters that walk around your screen. I made a prefix that contains all the files required for the shimeji and when I try to run it I get these sorts of errors. I have no idea what is going on! I am not fluent in computer at all. 

Help please. ): 

[Image: http://img522.imageshack.us/img522/6023/screenshot20110222at326.png ]

[Image: http://img825.imageshack.us/img825/3146/screenshot20110222at328.png ]