How do I change the tones on my gearbox using a foot pedal?

I can work this thing in my room using a mouse ..but if I want to change tones live while playing.. how is that done? I cant be expected to go to the computer and change the tone using a mouse in the middle of a song

Do I need to buy a separate add on to export the tones ? What hardware do I need to buy to be able to connect to the computer and change the tones just like I would use any other distortion pedal?

Thanks.