I did it by editing the Source. The Rosity software bungles up the codde.. not sure if it's deliberate L

The html is

<a href="YOURLINK"
target="_blank"><img
src="YOURBANNER"></a><br></br><br></br><span class="Apple-style-span" style="font-family:Arial, Verdana, sans-serif;">(The
Target="_Blank" is what makes it open in a new window
btw)</span><br></br><br></br>

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.