While MetaTrader isn't a participant in The Marketplace@IB, and doesn't support integration with all the TWS, different sellers such as Trade-Commander (trade-commander. Com), and jTWSdata ... do offer software that they represent acts as a bridge between MetaTrader along with the TWS. -
http://ibkb.interactivebrokers.com/node/1982 to put it differently, I don't believe that you can utilize MT4 straight with Interactive Brokers, but likely can use a bridge using one of the platforms that does integrate with their proprietary platform.