Hi Linly! Welcome to BoltWire!
Martin gave the easiest solution perhaps. Depending on your needs you
could also set up your own password changing action. How it would look
would depend on whether or not you have your passwords encrypted or
not (the default setting), and who you want to be able to change them.
And if you want some kind of email verification it can get more
complicated.
BoltWire has all the tools built in to do stuff like this pretty
easily (esp now that we added the crypt command), and I could probably
set up a sample form for you if you specify exactly what you want it
to do and how you want it to work. But then again, Martin's solution
works great if you don't need anything more.
Cheers,
Dan