[kh99]

OK, in that case try this:

<textarea cols="16" name="textarea" onclick="this.focus();this.select()" 
rows="1" style="height: 200px; overflow: hidden; width: 256px;"><a 
href="{vb:var bbuserinfo.fieldX}"><img border="0"  src="logo.png"  </img></a></textarea>

where you'd replace 'X' with the actual id of your profile field.

That assumes that the above code is being put in a template. If it's not then you might want to use $vbulletin->userinfo['fieldX'] as part of the html string.