How can I configure PostgreSQL 9.0 to start automatically under Windows XP?
Here's a couple things to check:


I believe the Windows PostgreSQL installer has an option you have to check saying you want to run PostgreSQL as a service.  Make sure you used this option when you did your install.
Make sure the service is set to start automatically.


Start-&gt;Control Panel-&gt;Administrative Tools-&gt;Services
Find the service (should be named something like postgresql-9.0)
Make sure the Startup Type is set to Automatic