+1 ^^^an irish red was the first recipe i ever developed on my own. It's really not that complicated, but, in my opinion, using the actual irish ale yeast is essential. Nottingham is too clean (when handled properly), and s-04 gives you something along the lines of an esb. You'll get very good beer from either, but it won't be a real irish red. Besides, the price difference between dry and liquid yeast is down to a buck or two now. No reason not to do it right.