To be able not to tick that silly box, you will have to open 'EnterWorld.java' and add some lines, like:
setBuffQStarted(activeChar);
in the 'protected void runImpl()'
and
private static void setBuffQStarted(L2PcInstance player)
{
QuestState qs = player.getQuestState("Buffer");
player.setQuestState(qs);
}
at the end of 'protected void runImpl()', i mean after the void itself
or, wait a sec, i just got an idea :D, will show it in the evening... the idea would help you not to edit source code
evening: okay, so for now the idea doesn't work, i will try to make that later...