Looks to me like you have no clue on the drivers.
First, delete whatever Catalyst Control Center drivers you have in the control panel, the AMD driver autodetector sucks.
Go here: http://sites.amd.com/us/game/downloads/pages/radeon_win7-64.aspx
Download the 12.7 Beta drivers AND the 12.7 CAP1 drivers.
Install the 12.7 Beta drivers first, then install the 12.7 CAP1 drivers.
Once you have both of these drivers installed correctly, you should have no problems whatsoever with your xfire setup.