What you need to know about the OWA Change Password feature of Exchange Server 2007

is a nice post at MSEXchange team blog – I’ve been facing alot of issues and support calls where user’s couldn’t change their OWA password. This article has te information to fix the issue –
http://msexchangeteam.com/archive/2008/12/09/450238.aspx

If you want to know how simple it is made on Exchange 2007 SP3 (another reason to upgrade Exchange 2007 to SP3) and Exchange 2010 – another informative post by Exchange team
http://msexchangeteam.com/archive/2010/10/06/456520.aspx

Tip $$$
Exchange 2007, if you just changed the password and try again same day (depending upon your AD password policy) you may end up facing the error that your password doesn’t meet the complexity requirement to change the password. This is pain in the neck but make sense – So RESET the password in AD and select the option ‘user must change the password at next logon’