They can also be used to control external applications such as Windows Media Center.
The first step is to subscribe to an RSS feed in Internet Explorer. Click the Subscribe to this feed link in the yellow box. You can change the name of the feed and also specify which folder in which to save the feed.
An attacker could even use a gadget to take complete control of your PC.
An attacker who successfully exploited a Gadget vulnerability could run arbitrary code in the context of the current user.
Move the cursor over the gadget to access the toolbar for it.
Click the wrench icon to access the options for the gadget.