If your chip is newer D2Pro9 V2, then you download the 1.5 update, which I did. It is small 94kb but when you unpack it, it blows up to 1.35Gb. You then burn the iso DVD with imageburn as you normally would a game. You stick it in your wii drive and it will look like a Gamecube disc which you run and follow the instructions.
Like I said before, my wii ejects fine, it just kinda stops taking discs until I do a power cycle, which still happens after the update!