Yes it should be Swiss pairings I believe.
So essentially the winners will play the winners and the losers will play the losers. Use the Fleet Points to determine who gets paired against who (the two winners with the highest fleet points play, then the next two). If you have say 6 players, then the winner with the lowest fleet points would play the loser with the highest fleet points.
In the second round, pair again with people on 2 wins playing each other for overall victory, then people on one win one loss, then people with 2 losses. Again Fleet points are used to match where it doesn't work out quite right.
It's also important for players not to play against the same person, so where this would happen you pair someone down to the next person.
Or, you could just use Wizkids event reporter on their website, which will do all the swiss pairing for you automatically each round after you enter in the results.