Free software to generate a high(ish)-quality family pedigree?

Long story short, I'm a senior getting a degree in genetics, I waited to take this Intro to Heredity class until the last minute. I also waited until this last minute to write this term paper, since I figured it would be easy to find programs to generate high-quality family pedigrees.

However, I have been searching for the past few days, and I am getting kind of frantic. Does anybody know of a good free package for any OS/software combination, it doesn't matter. I can get access to Photoshop, Illustrator, R, anything, but it just needs to be programmatic, in that I put someone's name in, and I get a legitimate familial pedigree with the correct nomenclature and standards.

Thanks!