postgresql 7.1.3

Owen,
Do you know how to get postmaster to start with the " -i " flag?  I want to 
use pgaccess and when I try to connect to the db, it gives an error message 
saving that the postmaster isn't running with the " -i " flag or accepting 
connections at port 5432.  If I start postmaster with " -i  " manually, it 
works fine, but I need it to start automatically
Thanks,
Dave