No, I just want xfwm to replace Kwin. I want to keep the Kicker, and all my Karamba apps, and my KDE icons and widgets and fonts, and the Kmenu, and all those things I love about KDE. I just wanted to experiment with the transparency and compositing effects of xfwm. And my machine is OLD, so compiz is out of the question...
If it's not possible, that's fine, kwin with crystal themes is pretty good.
On that note, does anyone know of good fonts and good widget sets to go with Crystal Themes? I've got crystal Diamond Icons, and the Crystal window decoration, right now I'm using QtCurve Widgets and Iwona fonts, but I'd like stuff a little more suited to the crystal look and feel.