Monitor for Internet links

Thanks Kevin What I want is a simple thing like when we have a http monitor that should get the outlook page from exchange and if it gets one and the reply has a word "outlook" in the first 200 lines tht makrs the pool member as up. Similarly I want to create a http monitor that should get the www.google.com or www.yahoo.com or www.microsoft.com and if the monitor assigned to the pool of links is successful that member should be marked as up.