I just received two books concerning this topic. One is titled "The Jail Administrator's Toolkit for Reentry" May of 2008 and the other is "Life After Lockup Improving Reentry from Jail to the Community" May of 2008. The folks responsible for these publications are Departement of Correction and Rehabilitation, Montgomery County, MD, Urban Institute, John Jay College and Bureau of Justice Assistance. According to the letter that I received with the materials you can access the information at www.urban.org/projects/reentry-roundtable/roundtable9.cfm.
The information I have received is outstanding at minimum. You may also want to research the Second Chance Act that was signed by President Bush on April 9, 2008 that includes jails in funding and research on reentry practices.
Good Luck!