You could use an LDIF change record and do it that way as well. For more on how follow this link.
http://www.novell.com/documentation/ndsedir86/?page=/documentation/ndsedir86/taoenu/data/a6i0f1p.htmlJust try it with a dummy user account first in a test environment before you put it into production. Same goes for JRButils. Otherwise you may not be happy with the results.