Windows XP Service startup

[Glenn Sullivan <glenn.sullivan@xxxxxxxxxxxxx>]

I have been using an application which uses PostgreSql on Solaris for a few
years and now I am trying to our application running on Windows XP.  I want
the postmaster started as a "service" which is a choice during installation.
However, when the service is started, I want to use a different data
directory (-D option) than specified automatically for the service.  

How can I specify my desired "-D" option for the Windows XP Service?

Thanks,
Glenn