WOT supports only the 32-bit version of IE (6 and above) --- it does not support/protect  the 64-bit version.  
Hi, I use to see a Green circle of the WOT on the top left corner of my previous browser-IE8. I last night installed the IE9 and the WOT's circle has disappeared.!! Any ideas why the WOT circle is present? Regards
How to get the WOT circle displayed on the latest IE9 window?