try mda talkbox
just in case u dont know to set it up:
activate ASIO or any other driver that allows the Line In
pick a mixer channel and set input to mic. pan it full left
pick another mixer channel, pick a synth and send the synth to this mixer channel. pan it full right
pick a 3rd mixer channel, load the talkbox on that. now route the first and second channel to the 3rd channel.
turn on your mic in the control panel of your pc.
now play and talk and it should work if u did it properly. a smooth synth works best but experiment