> This does make me wonder why tikiwiki dosen't allow admins to easily alter the passwords of users. This was an essential feature of phpbb that I used quite often, considering most of my users were students who were fairly new to computers. I can't really think of a good reason why the admin shouldn't be able to do this.
You can. See the FAQs for details on how. and its even easier to change in 1.9 tiki.