Hi John, have just noticed you connected to an XP laptop without a problem. Can only suggest because it is a Windows 7 machine that you are having a problem with that its because you do not have the correct permissions set up since Windows 7 is more strict than XP - make sure you have admin rights on both the Windows 7 laptop and tablet. If that doesn't fix it, can you try to follow the link I sent you as it looked identical to the problem you have.
Rgds, Ian.