Using FF 9.0.1. This feature has been around for a while, but never thought to ask this question. The feature is - you can click on a tab, and then drag it, and it separates and becomes it's own window. Sometimes, I want to take a window and re-attach it to the other FF window I have open. Then that window becomes a tab. Or sometimes I have grabbed the tab and moved it from the window by mistake and want to put it back. How can I do that? I use both Windows XP Pro and Win7. Chris