It contains icons and cursors, they are reutilizable.
It used to be a downloadable add-on for Windows from one of the W.I.T.C.H. official pages.
Witch.7z - It contains extra Icons
WitchTheme.zip - How I got it originally.
Official & Old sites:
Interest Info: There used to be a W.I.T.C.H. screensaver on Jetix page, but I think that is impossible to get it. (The links in Jetix Snapshots are broken)
Disclaimer: I don't know the creation date, nor the autors, is something very old from internet and is quite hard to go back to search for them. I think that I got them from the Italian W.I.T.C.H. page or similar. I can't identify which type of licence it should have.
The date from the files say 2006. If anything else, everyone is welcomed to contribute or comment.