Sending a simulated letter to VLC using SendInput()

[pete^]

I am writing a program with Visual C++ 6.0 that shall send the letter 'a' to VLC. I want it to do that because I want to adjust the volume in VLC using the hotkeys in VLC. I want to use SendInput to do this. Do anyone know what parameters I must use in SendInput(), and which libraries I must include? I have searched with google without any luck

thanks in advance

pete