FA Cup: Behind the scenes with Kidderminster boss Russell Penn before West Ham tie

It is a big week for Kidderminster Harriers as they prepare for Saturday's FA Cup fourth-round tie with West Ham United at their Aggborough ground.

The National League North club hope to cause a huge shock by knocking out their Premier League opponents in front of the live BBC One television cameras, with kick-off at 12:30 GMT.

Throughout this week, Kiddy boss Russell Penn is counting down to the tie by taking readers behind the scenes at the club with his BBC Sport FA Cup diary, which will be updated daily.

The hair and beauty salons of Kidderminster do not know what is about to hit them.

The players have been told that there will be television cameras inside the dressing room recording them before the West Ham tie, at half-time and full-time.

That's prompted a flurry of bookings for moisturising treatments and hair cuts although Jimmy O'Connor — my assistant — and I do not have to worry when it comes to a short, back and sides.

It's the eve of tie and, for me, the hardest day of the week.

This morning I will be announcing the team to the squad and I am under no illusion how difficult it is going to be telling some very disappointed players that they will not be starting one of the biggest games in the history of Kidderminster Harriers.

My task would have been made much easier had we been going into the tie on the back of a defeat, but we've won five out of seven since knocking Reading out in the last round.

You have to stay strong in these situations and I need to pick a team I believe can stay in the game and present West Ham problems.

I am braced for some disappointing reactions which is why I'm revealing the team to the group 24 hours before the match. If I left it to the morning of the game then those omitted would be upset