United were 3-1 victors over Dereham Town on Saturday despite a spirited showing from the Ryman North side.
Greene discussed United getting through a tricky tie and how Dayle Southwell's 44th minute goal changed the half-time team talk.
The United manager analysed his strength-in-depth ahead of Tuesday's league trip to Worcester City.
VIDEO: Dennis Greene interview
United video interviews are sponsored by Ringrose Law.