Totally fresh uninstall/reinstall of Postgres on MacBook Pro running Snow Leopard?

[doug livesey <biot023@xxxxxxxxx>]

Hi -- I'm having a world of trouble getting Postgres to work with a number of ruby libraries, and was thinking that, to be sure that I'm eliminating all that could be wrong, I need to ensure that my Postgres install is fresh, correct, and as canonical as possible.

Could someone advise me on the best way to ensure that I have first *totally* uninstalled Postgres from my machine, then secondly the best way to install it so that everything is most likely to be set up the way a third-party developer might expect (ie, what is the most vanilla Postgres install)?

Thankyou very much for any & all advice.

   Doug.