Can anyone tell me how to select and play my custom maps from within the game?

I know this has been asked alot but i reall seem to do it right.
I have my UT3 installation on my D disk and the "My Games" folder is correctly setup as seen in the screenshot.
I also tried the -nohomedir thing and placed it in the "CustomMaps" but that also does not seem to work.
Its not very importand but very annoying because i seem to have placed it in the right folder wich is
C:\Users\windows7\Documents\My Games\Unreal Tournament 3\UTGame\Published\CookedPC

I know this has been asked alot but i reall seem to do it right.
I have my UT3 installation on my D disk and the "My Games" folder is correctly setup as seen in the screenshot.
I also tried the -nohomedir thing and placed it in the "CustomMaps" but that also does not seem to work.
Its not very importand but very annoying because i seem to have placed it in the right folder wich is
C:\Users\windows7\Documents\My Games\Unreal Tournament 3\UTGame\Published\CookedPC
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