How to increase swap space?

How do I increase the swap space on my machine?

Code: 
[root@sg1 root]# uname -a
Linux sg1.indexthis.net 2.2.17-14 #1 Mon Feb 5 17:53:36 EST 2001 i686 unknown
[root@sg1 root]# free
             total       used       free     shared    buffers     cached
Mem:        257516     245488      12028      57656       5420      30524
-/+ buffers/cache:     209544      47972
Swap:       102808     102804          4

 

 

 

 

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