problem with message box

[Pike]

Dear Sirs,
I have a problem with the message box in that I recently loaded up the game and started to play a single mission. However where the message box is in the cockpit (top left-hand corner) the box had greyed out. I managed to create another box which was transparent but I could not move it off the screen and now have 3 greyed out boxes blocking my view and I cannot get rid of them. Please advise.
best regards,
Pike.