Campaigns loading problem

Hi.I have just downloaded some campaigns from site's "Warcraft 3 Campaigns / mods" section and i can't load them in game.I have to open world editor, open them there and then press Test button.If i put 'em in Maps folder or Campaigns, they are not shown in game at Custom Game.Please help me cause there are some awsome cinematics and I want to watch them. I did not know where to post so posted here

Sorry for my poor english :(

Chances are your directory path to the maps (C:/Program Files/Warcraft III/etc.) is too long, in addition to the names of the maps, so they won't show up in Custom Games.