West Ham owners David Gold and David Sullivan will be relishing the chance to get one over their old club as the two go head to head over two legs to earn a chance to play at Wembley in 2011.
The first leg will be played at the Boleyn ground on Tuesday 11th January at 7.45PM and the return leg will be at St Andrews on Wednesday 26th January at 7.45PM.
In the other semi-final, favourites Arsenal will face Championship side Ipswich Town.