www.thebulliondesk.com is real time, and also updates during all market hours as opposed to some others that only update during the market hours of their country of origin.
http://www.netdania.com/Products/li.../real-time-forex-charts/FinanceChart.aspx?m=c click instruments then silver spot
I use the same one TC just listed. http://www.kitco.com/charts/livesilver.html I like it because it provides 24 hour charts so you can track the trends as well as the spot price.