any swap utilities I can use on fc5

[Paula J. Lindsay]

    I installed a fc5 machine yesterday and now the doctor says he needs 
    16gigs of swap space.  Is there a utility that I can use
    to add swap space without repartitioning and reinstalling the whole os?
    I tried the mkswap, but was not successful.
    Many thanks in advance.
    Paula

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  o The			Paula J. Lindsay, IT Analyst III
 /        	 	Research Computing, TPC21
o   Scripps		phone:  858.784.9378
 \			fax:    858.784.9301
  o Research 		email: paula at scripps.edu
 /                    
o   Institute						
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