FLD DWORD PTR DS:[83D4F0h]; not editable PUSH 858BE4h; not editable PUSH 0C4h; editing this wont bring you anywhere but into trouble SUB ESP, 0Ch FSTP DWORD PTR SS:[ESP+8] FLDZ FSTP DWORD PTR SS:[ESP+4] FLD DWORD PTR DS:[84A854h]; not editable either FSTP DWORD PTR SS:[ESP] PUSH 847CD8h; not editable either CALL 421D40h ADD ESP,18h MOV DWORD PTR DS:[1D32160H], EAX; editable, modifying the value of this addy will do it because it takes this address to look for the value RETN