I can't speak for the Czech Republic, but after having suffered an entire season of ND football from abroad, here's a few tips.
1) Definitely worth looking for on TV. Just prepared to stay up late.
2) If not on TV, somebody WILL be streaming it online. Google "ND football live streaming" and follow links. Can take a little time to find good links, so give yourself time.
3) Try to have at least 2 pages open at once. Only have one going at a time, but if that stops streaming you should be able to switch to the other an not lose a beat.
4)Look at ESPN 360. If you're desperate enough to pay 15 bucks, they usually carry the games.
and, finally
5) follow the posts at Irish Envy.