UBB.threads PHP Forum Software Community Forums Resources and Customizing How Do I? Disabling the change password option in newly created forum

Can we disbale the option of changing passwords in newly created forum. I am planning to integrate login from some other parent website. The user will login from some other website and it will automatically create and login the user in the UBB forums site. The user nee not to remember diffrent usernames and passwords for both sites.