Are you connected to the gnutella network? In the "Gnutella Net" panel at least one connection should be visible and blue. Another way to find out is to look at the "Monitor Search" panel. Lines of text should be constantly scrolling through it. If both of this is visible I cannot help you. You should only use a simple search term like "madonna" though. And it takes some time until the results start flushing in. This largely depends on your connection speed and the number of hosts you are connected to.