If you go to "Other Valuation Metrics" in the M* premium screener, PEG is there. 

That said, when you talk about growth your talking about the future, so you need some sort of analysis.  Unfortunately, analysts are pretty terrible at estimating growth.  They tend to get anchored to company projections, historical growth, and a slight optimistic bias (take a look at how many analysts/companies plan to increase earnings faster than the overall rate of growth in the industry/geography that they operate in).  They also tend to miss the truly exciting growth stories until it's too late to get in on them because they avoid small and risky stocks and only recommend something like AAPL or GOOG after everyone's on the bandwagon and a lot of growth has already happened. 

So I think if you want to be a serious growth investor, you really need to either find a growth manager that you trust, or analyze companies yourself until you find those with reasonable P/Es and growth prospects stronger than the market expects.  This is a good market to do so, because a lot of short-term earnings are getting beat up and P/Es are dropping even faster.