i only deal with server emulator repacks ( the come with all the needed stuff and easy steps.), due to being only testing the maps.
for the server as said above you only need the vmaps, which are used for NPC and mobs not players, so game shouldnt crash due to that or do anything crazy.
however you can get updated vmaps, by doing this.
[spoiler:3aotcztt]Download the maptools pack from here
http://code.google.com/p/trinitycore/downloads/listunpack the maptools to your wow folder and run makevmaps3_simple.bat & mapextractor.exe make sure wow is closed when you run it.
this should create 3 folder maps, vmaps and dbc Copy all 3 folders to your trinity server folder.[/spoiler:3aotcztt]
got this text from mmowned on a repack topic....dont know if i can post it here...