This is the autoit script i'm using.
CODE
Run ( @ProgramFilesDir & "\Softwin\BitDefender8\bdmcon.exe" )
WinWaitActive ( "BitDefender 8 Professional Plus - Evaluation" )
Send ( "{ENTER}")
WinWaitActive ( "BitDefender 8 Professional Plus - Registration" )
Send ( "xxxxxxxxxxxxxxxx" )
Send ( "{ENTER}" )
WinWaitActive ( "Online Registration" )
Send ( "{ALTDOWN}{F4}{ALTUP}" )
WinWaitActive ( "Online Registration" )
Send ( "{ENTER}" )
EXIT
WinWaitActive ( "BitDefender 8 Professional Plus - Evaluation" )
Send ( "{ENTER}")
WinWaitActive ( "BitDefender 8 Professional Plus - Registration" )
Send ( "xxxxxxxxxxxxxxxx" )
Send ( "{ENTER}" )
WinWaitActive ( "Online Registration" )
Send ( "{ALTDOWN}{F4}{ALTUP}" )
WinWaitActive ( "Online Registration" )
Send ( "{ENTER}" )
EXIT
And this is the screenshot, after it has entered the first 2 numbers of the registration serial, but stoppped, because for a second there, the window became inactive.