Game help plz its just quick

[size=1]i have a space ship i have all the keys so it moves ok good[/size]
[size=1]well my problem is[/size]
[size=1]i have 1 mc it starts without flames and i have the second frame with flames[/size]
[size=1]what actionscript would i use so[/size]
[size=1]that when i press the right key it shows[/size] the frame with flames.