I'm going to make a list of add-ons for ut2k4 that should have a look at for LAN parties.
Mods-
ChaosUT, CUT -http://chaos.beyondunreal.com/
Maps-
AS-MZ-HighRise http://www.vec.be/page.php?id=173
DM-TheDeck2004 http://www.mapraider.com/maps/?fileid=1991
DM-1on1-Kenshin2004 http://www.unrealplayground.com/review.php?id=1183
DM-BelowTokaraDeluxe http://nalicity.beyondunreal.com/map_hub.php?mid=7719
DM-1on1-TheCore http://nalicity.beyondunreal.com/map_hub.php?mid=7135
DM-1on1-Biosteel http://nalicity.beyondunreal.com/map_hub.php?mid=7197
DM-1on1-Contact2k4 http://nalicity.beyondunreal.com/map_hub.php?mid=7114
DM-1on1-GravityLab http://nalicity.beyondunreal.com/map_hub.php?mid=7191
Mutators-
Cluser Redeemer http://www.ut2003hq.com/pafiledb2/pafil ... le&id=3643
Air StrikeX http://unrealtournament2004.filefront.c ... omb_;24754
Arkon Weapons http://unrealtournament2004.filefront.c ... a_03;20327[/url]
Crotch Shot http://unrealtournament2004.filefront.c ... _Pro;43996