In 1.7.1 there is an option to set a site policy that users must see and agree to the first time they log on to the Moodle.
Site Administration Block
Security
Site Policies
You need to upload the policy into the site files or create a web page in a the home course that you can link to. (make sure that the policy is visible)
Rick.
General developer forum
Change/Customize the profile Page
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