Folderview is Screenlet is a GNOME dekstop widget designed to work like KDE4′s folderview applet. So is another nice screenlet to costumise your gnome desktop.
For installation you need first screenlets 0.1.2 installed , if you diden`t hear before about screenlets then read this post
After you install screenlets (see this link for insalation), then follow these steps to install Folderview screenlet
1- Open screenlets manager
2- Click install (is on the top-left of screenlets manager) and install the downloaded Folderview screenlet