Is there a way to make a special message appear for only certain usergroups?

[cdoyle]

Hi,
I hope this is the right forum to post this question.

But I was wondering if this is possible,

On our forum, we have 2 sets of users. 'Registered' or free members, and 'Platinum' Members (members who have paid the subscription service). The platinum members get the avatar, signature, and access to more forums.

What I thought would help to encourage the free members to upgrade to the platinum, if possible have a message appear in the header.

That says something like

"Do you want an Avatar, or Signature, or access to more forums? Then upgrade to our Platinum Membership by clicking here"

Is there a way to make a message like this appear for only the registered members? and not for the people who have already signed up for the platinum?

Thanks in advance
Chris.