Yes, you can install xfce from contrib repository by building the packages. Please add the contrib repository;
sudo pisi ar contrib http://svn.pardus.org.tr/contrib/pisi-index.xml.bz2
Build base stuff
sudo pisi em desktop.xfce4.base -d
Build some goodies (thunar media plugin, date/time for panel, etc.)
sudo pisi em desktop.xfce4.goodies -d
Yeah, xfce is installed but we should do some configuration changes.
Build the kdmtheme application to change a login theme to see the Xfce4 option and login
sudo pisi em kdmtheme -d
Configure it by writing,
kcmshell kdmtheme
And give root privileges in the application, Please select another login theme and press OK
After it, we should move ".gtkrc-2.0" file in the home directory
mv ~/.gtkrc-2.0 ~/.gtkrc-2.0.backup
Xfce is ready! Please shutdown the session and select the Xfce from menu than login

Also you may want that;
= Abiword =
Note: Now we should build the latest version of XML-SAX from my playground, it has no problems. When it has been added the 2007 repo, you will able to install it as pisi.
sudo pisi bi http://svn.pardus.org.tr/pardus/playground/eren/programming/languages/perl/XML-SAX/pspec.xml
sudo pisi it XML-SAX*.pisi
sudo pisi em abiword -d
= Gedit =
sudo pisi em gedit -d
= Xchat =
sudo pisi em xchat -d
= Gaim =
sudo pisi it gaim
= Sylpheed =
sudo pisi it sylpheed
= Geany =
sudo pisi em geany -d
If you have a problem, please contact me;
turkay.eren@gmail.com Also from irc; irc.freenode.net #pardus