// Variables
new RamrodStarted = 0;

// In OnPlayerCommandText:
if(strcmp(cmd, "/ramrod", true) == 0)
{
	if(RamrodStarted == 1)
	{
		GivePlayerMoney(playerid, 1000);
		new PlayerName[24];
		GetPlayerName(playerid, PlayerName, 24);
		format(string,sizeof(string),"%s has won 1000 bucks!", PlayerName);
		SendClientMessageToAll(0xFFFF00AA, string);
		RamrodStarted = 0;
	}
	else
	{
		SendClientMessage(playerid, 0xFFFF00AA, "You're too late!");
	}
	return 1;
}

// In OnGameModeInit
SetTimer("RamrodStart", 300000, 1);

// somewhere..
public RamrodStart()
{
	RamrodStarted = 1;
	SendClientMessageToAll(0xFFFF00AA, "First to type /ramrod winst 1000 bucks!");
}