Lewes's reward for Saturday's victory at Team Bath is a home tie in the second round of the FA Trophy.
The Rooks will entertain either Havant & Waterlooville or Bury Town on January 10.
Sussex's other Blue Square premier sides will both be away if they get through their first round games.
Crawley, who go to Chesham United tomorrow, will travel to Cambridge United while Eastbourne Borough's reward if they get past Swindon Supermarine is a trip to Uxbridge.
Bognor, who host Ebbsfleet United tomorrow, will be at home to either Stourport or Stalybridge Celtic if they get through.
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