I always hear that experienced forex traders dabble in e-mini's as well. I honestly did not know what an e-mini was until I did some investigation.
By definition, an e-mini is an electronically traded futures contract on the Chicago Mercantile Exchange that represents a portion of the normal futures contracts. There are a wide range of indices that can be trades such as the Nasdaq 100 and the S&P 500.
For example, an E-mini S&P 500 futures contract is 1/5th the size of a standard futures contract. The advantage of trading e-mini's is liquidity, greater affordability, and around-the-clock trading. SOUNDS A LOT LIKE WHY WE TRADE FOREX!
There are online brokers such as xpresstrade.com that provide trading of e-mini's for $7 per round-turn.
You can also use your forex trading system and apply it to trading e-mini's. It should work for both as charting principles are the same.
I'm going to look more into e-mini's in the coming days. The first thing to do is open a demo account to familiarize yourself with the indices available and the way a trade is executed. I'll definitely revisit this soon.