Bit of Info:
Thomson TG782t in Bridged mode with a Wndr 3800 with Gargoyle 1.6.2
17.25 Mbps / 0.80 Mbps
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Basically my needs are as follows, I have moved back into the family home and as expected there are a few more users than just myself now. This has brought forward the need for QoS.
Theres me on my gaming computer (My only device).
Theres my mothers boyfreind on his phone and computer (downloading/streaming god knows what)
Theres a 15 year old who mainly uses his xbox360 for gaming.
Theres my mother and twelve year old brother using their mobile devices (very light use)
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I currently have three classes set for download (Starting with download, I can work with upload later on)

"ACC is turned ON"
The only rule I currently have is for my PC (IP ending in .217) to be put into the "gaming" class which is ONLY for me. Essentially when I'm using my computer for whatever reasons I want to be the first man onto the plane, and everyone else to share the remaining bandwidth as seen in the "other" class. I do plan on making an xbox class and giving that it's own limit to ~120 kb/s. In doing this I hope to be able to game efficiently without streaming from the two boys interfering. I hope to keep this simple to begin with and learn as I progress.
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I would definately also appreciate any other tips and feedback that you all may have that could help me in my endeavours for lag "freeish" gaming such as how to apply a rule for steam ports, how to find what ports games use and how to apply rules for those too, Also anything I may have overlooked/missed when posting this, simple stuff to you guys could save me a world of annoyance.
I also noticed when I first loaded up gargoyle that there was default rules set in place for port 80 and another port in which i cannot remember (come to think of it there was a few) could anyone explain what these were for and if they are needed?
---EDIT---

or

I'm a bit confused now, I have destination in my download QoS, is this correct?