Stardock's best creation so far 

 Windowblinds is a utility made by Stardock, for customizing the layout of Windows. It was made in a wide range of programs all together called Object Desktop. Their home is Stardock Home, but WinCustomize is also a known place. There, all user creations like skins and widgets (DesktopX, also known with Konfabulator users) are stored. Those bored by the old interface can have a good time out there.  

The trial version can be found on Stardock's site. For those who like the program, I recommend buying it. But if you think it's too much, you first want to try some advanced functions or just don't wanna pay, I have a working full version of Windowblinds 5 Enhanced posted on my site (a link to the file on Torrentspy). Check this and this. The cracking may not work, so I've made a guide for that, up here

In the torrent there also are 60 skins, but that rar has also been posted on RapidShare, which can be found here. Even for trial users I'd recommend that file. But it's about 40 MB, and new skins may come available. My favorite, A Touch of Glass, for example, has already been released as v3.1. In the package, only v1 and v2 are available.