Ahead of this weekend's highly-anticipated clash, we look back an the Hornets' games against AFC Wimbledon, Chippenham Town, Maidenhead United and Swansea City during their historic run to the second round in 2007.
Here are a selection of pictures from the Hornets' FA Cup adventures.
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Horsham celebrate beating Maidenhead 4-1 in the FA Cup first round proper in 2007-08, setting up a second round clash with Roberto Martinez's Swansea City
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Action from the Hornets' shootout win over AFC Wimbledon in the third qualifying round replay in 2007-08
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Action from the Hornets' shootout win over AFC Wimbledon in the third qualifying round replay in 2007-08
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Action from the Hornets' shootout win over AFC Wimbledon in the third qualifying round replay in 2007-08
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Action from the Hornets' shootout win over AFC Wimbledon in the third qualifying round replay in 2007-08
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Action from the Hornets' shootout win over AFC Wimbledon in the third qualifying round replay in 2007-08
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Carl Rook fires home for Horsham in their 3-2 win at Chippenham Town in the fourth qualifying round
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Action from Horsham's thumping 4-1 home win over Conference South outfit Maidenhead United in the first round proper
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Action from Horsham's thumping 4-1 home win over Conference South outfit Maidenhead United in the first round proper
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Action from Horsham's thumping 4-1 home win over Conference South outfit Maidenhead United in the first round proper
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Action from Horsham's thumping 4-1 home win over Conference South outfit Maidenhead United in the first round proper
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Action from Horsham's thumping 4-1 home win over Conference South outfit Maidenhead United in the first round proper
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Action from Horsham's thumping 4-1 home win over Conference South outfit Maidenhead United in the first round proper
1.
Action from the Hornets' shootout win over AFC Wimbledon in the third qualifying round replay in 2007-08
2.
Action from the Hornets' shootout win over AFC Wimbledon in the third qualifying round replay in 2007-08
3.
Action from the Hornets' shootout win over AFC Wimbledon in the third qualifying round replay in 2007-08
4.
Action from the Hornets' shootout win over AFC Wimbledon in the third qualifying round replay in 2007-08