Problems with getting the postmaster to startup with -i option.

I am using the redhat RPM installation of postgresql. I would like to be able to use some of the IP based management
toolsto work with the database and to do this I need the IP options working. 

How do I get the redhat RPM installation to start up in TCP/IP mode. I have tried to add the -I 5432 to the
postmaster.optsfile but the database keeps reverting the file back to its old version without the -I option.  

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Eric Naujock  CCNA, CCDA, A+, Network +, I-Net +
Abacus II
5610 Monroe St.
Sylvania, Ohio 43560
<http://www.abacusii.com>
E-mail - naujocke@abacusii.com
Phone - 419-885-0082  X 241
Fax : 419-885-2717
AOL IM: erlic