Yes, since the navigation tabs control is a WEB control, it would appear that it is using some settings in your web browser for always opening a new link in a new window. I've had other people have similar issues. I'm not sure that is something that can be overcome by simple means. I know it probably can by you going to your Internet Options and making sure to select the current tab or window (which can cause other issues). It could be a problem if you have to have each user do that. So, you might be better off not using the navigation tabs control.