So I'm fairly new to Australia and looking to book a fairly convoluted itinerary on QF and AY, namely MEL-SYD-NRT-HEL and back. Most online search engines (including qantas.com) seem incapable of coming up with sensible prices for this, but Hipmunk indicates that I can get a ~$2200 fare if I start from Sydney. However, not only do I want to start from Melbourne, but I need to stopover in Tokyo for a few nights on the way. My question is thus simple: how do I go about searching & booking this? Is there an online site that offers full fare rules and availability (yes, I am thinking about signing up for ExpertFlyer/KVS), and once I've got the flights sorted out, how do I actually book it?