Riiiiight. I'll do some more research but it appears the steps are to put the Super Hub into modem mode (I'll do a bit more browsing on the web to see how to do that) and then connect to my Netgear via an ethernet cable to the red port you mentioned. Then following whatever prompts the Netgear throws up. Assuming there'll be something to change as I'm currently configured for BT. Hey presto! We're good to go.
Seems simple enough now I've typed it out in that sentence - Though I'm sure that once I try it in practice it will be several hours of swearing at amber blinking lights, chucking a massive benny and then throwing the thing in the bin.