There is an issue with Rockettheme's Versatility III template under IE 6 (havne't tested this under IE7).  It isn't necessarily an issue with the tempalte per se but with the functionality they place in the template to handle PNG files within IE6.

If you remove, or comment out, the following from the index.php file, than this should resolve the problem.   

<!--[if lte IE 6]>
<style type="text/css">
#fxTab {background: none; filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='templates/<?php echo $mainframe->getTemplate(); ?>/images/<?php echo $tstyle; ?>/fx-tab.png', sizingMethod='scale', enabled='true');}
img { behavior: url(<?php echo $mosConfig_live_site;?>/templates/<?php echo $mainframe->getTemplate(); ?>/css/iepngfix.htc); }
</style>
<link href="<?php echo $mosConfig_live_site;?>/templates/<?php echo $mainframe->getTemplate(); ?>/css/template_ie6.css" rel="stylesheet" type="text/css" />
<![endif]-->

 Here is a reference from the google maps group.

http://groups.google.co.za/group/Google-Maps-API/msg/1dc2cdd3a4df7e64