Although I don't know HOW to do it, it would be cool if you also could make rotating desktop wallpaper for Windows 7 with these same themes in addition to the screensaver. I rarely use screensaver with Windows 7 because of its rotating wallpaper fea

The rotating desktop wallpaper in Windows 7 is outstanding, although the choice of themes is limited & I would love it if your aquarium screensaver also included a package of rotating desktop wallpaper scenes from your screensaver. Windows rotating desktop wallpaper sort of replaces a screensaver's functions except as far as I know, having not fully explored Windows 7 features yet, the rotating wallpaper doesn't include animations.

Most likely the next thing on the sceen will be screensavers that run as desktop wallpaper behind the icons, maybe you can be on the cutting edge as first to come up with it!