‘Fragments of Old Comedy,’ edited by Ian Storey and Jeffrey Henderson and covering a number of ancient Greek poets, has been published in volumes 513-515 of the Loeb Classical Library. With few exceptions, the Greek text is taken from Poetae Comici Graeci. The volumes are on the shelf in the Greek and Latin Seminar Room.
As an aside, the Loeb Classical Library will be moving online in 2013.