Filtering out dead stocks

[Tony <tnyhaug@xxxxxxxxx>]

Is there anyway of making a filter that tests to see that the most
recent data is equal to today's trade date.

I keep getting stocks such as Hadco show up on my explorations even
though the stock no longer exists. I am tired of manual using the
Downloader to filter such stocks. 

I simply want to filter out stocks whose last trade date is prior to
today or I guess today - 1.

Thanks