If you're trying to have one DNS-entry pointing at several IPs which should be resolved in a round-robin manner, you can simply do this in 2 different ways:
(e.g. "irc.das-werkstatt.com": 192.168.1.10, 192.168.1.11, 192.168.1.13)
1) If your DNS is running BIND-named and you have access to the ZONE-file of it, simply enter multiple A-entries:
irc A 192.168.1.10
irc A 192.168.1.11
irc A 192.168.1.12
voila.
2) If you do NOT have access to the ZONE-file, try adding multiple A-entries for the same subdomainname (e.g. "irc") with different IPs.
(works with "joker.com")