Bingo, that's what I was missing. So they don't expect you to come up with the fiber interface, they give that to you and you just have to deal with an RJ45 connection.
Thanks! (you too 00tec)
BTW, they do have a Gigabit-capable router, but since they're running just fine (outages aside) on their current 20-30MBps DSL I've told 'em to only go for 100MBps.
Heaviest load is probably two streaming devices.
O2