It was made and licensed by Pyzzo.com and theoretically was going to be released to the community but I guess they don't have the time. So, for now, you cannot get this great program anywhere. Also, the Pyzzo.com website sometimes works and sometimes it doesn't. Just so you know!
For more info about PCRDist and some other of my favorite sites, please see these pages
PC-Rdist and Windows Computer Labs
Index of /~nadahlman/pc-rdist/batch
Using PC-Rdist* at Wellesley and Amherst Colleges
How to use the Sysprep tool to automate successful deployment of Windows XP
Implementing NDS-Enabled Solutions at Clemson University, Part 2