Help! Can't find maps folder

[HolyWillRise]

My friend just installed Wc3 (from battle.net) i gived him a code and he installed it, but theres no maps folder, yes, he searched in C: Documents, but there are just error and logs, he tried to create a *maps folder* but its not working.

Finally he opened world editor then open maps, and he found the folder
But when he searched for the folder, the computer said that there isn't a folder with that name and he can't find it...

 

[Wrda]

What is that supposed folder to have inside anyway... custom maps? Obviously those folders don't exist if he never clicked the battle.net button, where you download the latest patch.