[GangstaSunny]

PHP код:

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(newkeys == 131072)//CONVERSATION_NO - "N Key"
    {
        OnPlayerCommandText(playerid, "/enter");
    }
    else if(newkeys == 65536)//CONVERSATION_YES - "Y Key"
    {
        OnPlayerCommandText(playerid, "/engine");
    }
} 


I think this will describe itselfs. Hopefully it will work with your CMD-Version.