My first modeledit. You need to use WoWME.exe and put patch-3.MPQ in DATA folder.
heres a virus scan of WoWME its for 3.1.2 Virustotal. MD5: 2b6ddd8bc909778ff43669877d8eef59
Alliance -> WoWME 3.1.2 and patch-3.MPQ -> download here http://data.fuskbugg.se/skalman01/patch-3.rar
Horde -> http://data.fuskbugg.se/skalman01/---------patch-4.MPQ
I didnt upload WoWME on the horde version so download alliance version and use that WOWME.exe.
I think the horde one works cant tell since im not an horde but if anyone could test.