How to install new theme?

[keep_it_riel]

Hello,
I downloaded a new replayer theme by going to “Configure” -> “Themes” -> “Download New Themes”.
Afterwards I clicked “Install New Theme”, locate the new dowloaded themes in my download folder but I don’t know how to install it form here. It’s just a folder with a bunch of png-files and 1 xml-file but I cannot select anything here (they are all greyed out).
Anyone know how to do this?
Thanks! :D

[kraada]

Pick the zip file you downloaded -- in this case you don't want to unzip it, PT4 expects everything in the zip file exactly as it is when it's uploaded (we test them all before approving them).