I have an EndNote style file for ACM reference format (which I very gratefully received from someone else who was nice enough to pass it on) that I have found to be very useful. EndNote allows you to pull your citations in directly from Word, and the BEST part is that it will automatically take care of  all the numbering involved in the CHI format for you!

It appears that I can’t post the file here on the blog, but I would be happy to pass it on to anyone who is interested. So if you are, email me (hwiltse@indiana.edu)! =)