Crud. I use MT 2.65, which hasn't been tested for the plugin. And I hate upgrading.
It sounds like the plugin will work on your version. It's just one file; can't hurt to try.
can't hurt to try
Is that a joke?
Ha! Nah, no joke. The plugin is just one file that you stick in your "plugins" directory. If it screws anything up, you just take out the file. Can't hurt. ;)