Sorry without more details
I dont use the gadgets but I can fully appreciate it when you see something you really like but just don't know the name of it lol
here's a list for W7
http://www.thoosje.com/Windows-7-gadgets-tools-utilities.htmlWindows 7 Gadgets gallery.
http://www.thoosje.com/Windows-7-gadgets-gallery.htmlVista
http://vista.gallery.microsoft.com/vista/SideBar.aspx?mkt=en-au