This is great:
@SET /P IGN=IGN= @java -Xms512m -Xmx1024 -cp "%APPDATA%/.minecraft/bin/*" \ -Djava.library.path="%APPDATA%/.minecraft/bin/natives" \ net.minecraft.client.Minecraft %IGN%
But if your trying to use any HD texture pack you will get the "unpatched bug" i.e. small lava and portal textures on all dirt blocks
is there any way to fix the issue ?