Again: How the hell do I restart immediately

I posted this question before and got no good responses. I'm posting it
again out of pure desperation.

I've got a Postgres 6.5.1 server running on a RedHat (i386) 5.2 box.
PostgreSQL was compiled from source with no special configuration options.

The server is dying about once or twice a week. This is making me look like
crap to the rest of the company since our e-commerce solution is built up
around PostgreSQL and we can't take orders when the sevrer is down.

What can I do to ensure (a) the server doesn't go down or (b) if the server
does down, it gets restarted immediately?!

Please respond if you have any good ideas.

--
Doran L. Barton <fozz@iodynamics.com>
Iodynamics LLC -- "Internetworking the masses"
<URL:http://www.iodynamics.com/>