Take a look at the last two posts on the bottom of this forum posting ->
http://www.pcreview.co.uk/forums/thread-3463855.phpApparently, after doing a lot of searching, I've found that you are not the only one with these problems, and it does not appear that they have been fixed either.
Also, after looking at this posting ->
http://office-outlook.com/outlook-forum/index.php/m/483895/It appears that this cannot be done.
I wish you luck.