Brilliant news -
with the new modem (Directly into the PC), Now to test with the router in the loop!
With the modem in the loop:
Not bad tbh, i'll happily accept that.
(Another one, 2mins after to let the connection settle):

[COLOR="Silver"]
---------- Post added at 15:37 ---------- Previous post was at 15:36 ----------
Great, now that that's working, i can't seem to connect wirelessly now... Perhaps too much to handle for the DIR-615 now that it's actually getting the correct speed? - I've tried resetting the router and various other things but i can't seem to connect via iphone with/without encryption, with/without MAC filtering.