Uninstall it!! It has very well documented issues.
I think the problem is that you have IE7 in protected mode.
turn it off.
Quote from TFay on 12/06/06 at 12:19:35:My workstation forces a windows security dialog box requiring authorization to run bktof.com whenever I try to print pick lists or SO acknowlegements. This just started recently, about the time I installed IE7. Does anybody know what this is and how to fix it.