CRACK> FIREHAWK By Sierra/Game Arts 
File         : game.exe 
Search For   : 803E9B05FF7403
Replace With : C606------EB--


and to use your Sound Blaster with IRQ settings other than IRQ 7


File         : sndblast.drv 
Search For   : B007BA8F20BB561EE8CB008CCAB8151F 
Replace with : --xx----------------------------

File         : sndblast.drv
Search For   : B007BB561EE8BF00580BC0C3B0E12E8B
Replace with : --xx----------------------------

File         : sndblast.drv 
Search For   : 83C20EEC2EC606280007B020E6205A581FCF1E0650
Replace With : ------------------xx----------------------

For xx use your IRQ setting. i.e. xx=02,03,05,0A for IRQ 2,3,5,10 respectively.