Offline NT Password & Registry Editor
, which is included in UBCD, does the same and is much smaller.
PCloginNow probably uses the part of "Offline NT Password & Registry Editor" that does all the work. The PCloginNow CD is a modified GParted-liveCd that contains many leftover files.
For a tutorial to add it to UBCD, you can look at: http://www.ultimatebootcd.com/forums/viewtopic.php?t=1576
in the config files and path where you place the files of PCloginNow.
Download Ultimate Boot CD v5.0
Use Parted Magic
for handling all partitioning task: http://partedmagic.com/