If you subscribe to Yahoo! Real-Time Quotes, you can see live quotes on the Yahoo! MarketTracker and across the Yahoo! network, including Yahoo! Finance, and My Yahoo!.

In order to view real-time quotes on Yahoo! Finance, simply look up your portfolios and symbols in the same way that you do right now. As a Premium subscriber, your delayed feed is switched over to a real-time feed so all quotes on the quote pages of Yahoo! Finance show real-time exchange quotes.

Your portfolio in My Yahoo! also contains real-time data as indicated by the disclaimer at the bottom of the module. You see the same module as you always have, but the data is real-time rather than delayed.