Quick update.
My sisters hub came today (it is the one pictured), so I just got back from setting that up for her. Shes not teccy minded, so I think the all in one solution will mean I wont be going down as much resetting everything (fingers crossed)
I never thought I would see the day where a change of modem would mean the difference betwen 0.5meg (on her old Ambit 200) to 9.9meg with her new hub. Instant improvement so she is well made up. The agent I called couldnt of been more helpful and activated it in no time

and generally I was pleased with my experiance with the hub this time. She does not have 2 xboxes, so that should be perfect for her. Looking at the lights as well, I would hazard a guess it downloaded a newer firmware on its initial activation.
One tiny hicup, her Kodak Hero 5.1 printer is not connecting wirelessly. I tried setting the DMZ to the computers IP, the printers IP. I think I can make the printer a static IP, but didnt really have the time to try some fixes. Any suggestions welcome and I'm also about to google it