There's no easy way to do it.
I know I'm starting to sound like a broken record, but if you have a Web Server installed on your computer (such as IIS/PWS or Apache's HTTPd) then I'd strongly reccommend setting up PHPMyAdmin (from
http://www.phpmyadmin.org/, you'll need
PHP first :P). If you have that set up then you can just click on the "Permissions" link for an easy view.
If you don't want to go that route you'll have to come up with an effective SQL query. I don't know how to do it though since it requires looking at 4 tables to get all the info you need.