What is a good Turbografx emulator

[What is a good Turbografx emulator]

i've seen a few references to people downloading emus into their xbox. i just got one for christmas a few weeks ago and would like to do this, whats the procedure???

[a way to simulate the difficulty select switch on 2600]

is there a way to tell a keyboard or joystick to simulate the difficulty switch on a 2600 emulator? i wanna play my ghostbusters rom but i'm don't believe i can fully play w/o access to that switch.

[beat em and eat em on stella]

okie dokie

[beat em and eat em on stella]

what is used to control the guy in beat em and eat em? i read it was a paddle game, so i tried the mouse but no luck. is there a place that tells the basic controls for most games? thanks

[very basic ? i'd imagine]

got what is a pretty basic question i bet. i don't have my old 2600 anymore but i use an emulator. how can i play games requiring the ol paddle controller? is there a way to do it w/ the keyboard, or do i need an external controller and if so what kind? thanks!