Whoa! You sure found an ancient guide somewhere.
Triiforce is outperformed by triiforce_mrc, which is outperformed by mighty_channels and uloader. Oh, and sneek/uneek is even better than that.
So the question is actually: do you
really want to install triiforce, or do you want a program that actually works?
(it may sound harsh, but mighty channels and sneek are at least supported).
The main difference is this: with mighty channels, you us your (updated) cIOS'es for nand emulation; games work as before.
sneek/uneek has better compatability and does
everything on that emulated nand rather than on your wii nand. It's slightly slower, though.