the crossfire launcher does not contain any code to set or change any screen resolutions. please try to start the launcher from windows explorer instead: ".../microsoft games/freelancer/exe/freelancer.exe" (or have a shortcut to this on ur desktop)
nice - never underestimate the need of ur machine for ur personal attention (it will need u to hug it from time to time) or it will come up with errors u never dreamed of^^