Think I located the overflowing prob...
In skin1/customer/home.tpl locate something similar to this...
<!-- main area -->
<table width="100%" cellpadding="0" cellspacing="0">
<tr>
<td class="VertMenuLeftColumn">
and change the width from percent to pixels (in this I changed it to 870)...
<!-- main area -->
<table width="870" cellpadding="0" cellspacing="0">
<tr>
<td class="VertMenuLeftColumn">
Hope this helps.