Ok FC6 KDE, great, you cleared that up.
Now i presume you are pointing at the default desktop effects which come with it. You might want to install Beryl for full awesome effects.
Once its installed you can run 'beryl-manager' anywhere. To load it at startup you have to add it to the service startup, oops, i forgot where in KDE. I use Gnome, so i add it in System Main Menu->Preferences->More preferences->Sessions. Other options like /etc/rc.local, /your_home/.bash_profile might also help.
Get some cool themes at Gnome-look.org