actually, looking at setanta.com there is an american version as well, so you might only have that in which case they probably won't show the fight at all as hbo will have bought exclusive united states coverage. you can check the schedule on setanta.com, but they only list up to around 2 weeks into the future.
Thanks again, rooq. I checked that site out myself and emailed them for info. I suspect you are correct about a blackout, but I want to make sure. With all of its channels, you'd think HBO could televise the undercard on one of them. I guess Lampley and Co. might not want to take on that many fights, though.