Keen was first-team coach at Liverpool last season when they reached the FA Cup final and believes Albion have players who are hungry for success.
He said: "For me, after 29 years in football, to get to an FA Cup final was tremendous, one of the best days of my life even though you end up losing the game.
"The way the supporters react, the atmosphere was unbelievable and we will be going all-out to try and get that feeling for the West Brom fans.
"Even though it is only the third round, if you can get to the fifth-sixth round, the excitement builds and it's a long time since this club has had major success.
"I can't think of too many of our players that have played in an FA Cup final.
"There is enough enthusiasm for this competition and people want to achieve and get their names on West Brom Albion honours boards and be forever remembered. That is what players play for."