First you download a file in this link http://www.minecraftforum.net/viewtopic.php?f=17&t=297380

then when you have done that.

you open the program you downloaded.

then you press on 1.4 and extract bin.zip.

when thats done and you have saved the bin.zip then press on 1.4 and patch.

you need 1.4_1

not 1.4

This tutorial is terrible. Not trying to be mean ahha, but there are already like 4 more on these forums. Why would you make another one?