Here is his post (post #35 from this thread)
The .apk is on post #35 but yall should go buy it off the market and show some support.
Alright, here we go. This app will flash your LED when you receive a phone call or when you get a new text message. Unfortunately it can't do it when you get new emails since there is no standard system notification for email among the many email apps (Email, Gmail, K9, etc.).
Here's a screenshot of the app, Flashlight Alerts:
The APK is attached and it is also available in the Market for $2.99 if you'd like to donate:
It was actually a real pain to put together since there is no standard flashlight API prior to Froyo, but I'm happy with the way it turned out. Let me know if you run into any issues!
PS: I would appreciate it if somebody could check if this thing is actually in the Market on their EVO. It's showing up there on my Nexus One but not on my EVO. Hmm... Fixed this. Stupid bug in the Market makes it so that if you mark your app as requiring a camera with flash, it doesn't show up for EVO.