metro touch keyboard with a mouse.

Hi guys, I've just installed win8 on my media PC, I'm really happy with it for the most part, it's not worse then win7, there are some small but helpful changes to wmc. Metro looks great on the tv. There is just one problem, when I click on text boxes in metro apps with the mouse I don't get a keyboard as you would if you touched the text box. This is particularly annoying as I don't have a...