Ok - I know now having seen your site from the other topic.
Login Button: Go to the forum admin > components > Login and Registration and turn off the use of the forum logon button/form.
Members Button: Go to the forum admin > Permissions > select whatever permission set is being used as the default for Guests. By default that would be the one named 'Limited Access' but you may have changed it. Use the 'Permission Usage' button to make sure. Open the set for editing and uncheck the option in the View section to: 'Can view the members lists'.
While in guest permissions you can also make sure that you have al the others the way you want them. Plus - as you are going for free entry to all - I would strongly advise the use of our Captcha plugin.
The label is a more difficult one and - now it has come to my attention - one that I will get changed for the next update of SP. So you could wait for that or else I can tel you what to edit while you wait for the change. Let me know your reference but it will require an edit to a theme template.