Leeds have to wait until Tuesday evening, and if their is a replay needed even longer, to find out which team they will face in the fourth round later this month.
"Like all these games against teams from lower divisions you are always up against it, as Everton found out at Shrewsbury, but that is what makes the FA Cup so special," Venables told the club's official website.
"The fact that a small team can knock a big team out is what everyone loves about this competition.
"That is the glamour of the FA Cup but whoever wins between Gillingham and Sheffield Wednesday it is going to be a difficult tie for us. It will be a massive tie for them and they will want to knock us out.
"I would have preferred a home tie, obviously, because the odds I still feel are in favour of the home side but the draw has given us an away tie but it's fine by me. We did the business against Scunthorpe and it is up to us to do similar again."If it did happen to be Sheffield Wednesday it would be a big Yorkshire derby and would obviously create a tremendous amount of interest. Gillingham's ground is smaller but they are a good side and a good cup side and Sheffield Wednesday will find it very difficult there. But both teams will have a great incentive to win that one."