Do i need swap?

Does my machine need swap for the amount of RAM i have?
Information:
Dell Precision Pro 470 Workstation
2x Intel Xeon 3.0Ghz (Hyperthreaded) (12ghz Total)
16x DDR2 ECC RAM (Overclocked)
1GB Nvidia Geforce GDDR2 Graphics
32" Samsung Monitor
Information:
Dell Precision Pro 470 Workstation
2x Intel Xeon 3.0Ghz (Hyperthreaded) (12ghz Total)
16x DDR2 ECC RAM (Overclocked)
1GB Nvidia Geforce GDDR2 Graphics
32" Samsung Monitor