Hello Jonathan, I had some challenges with the 8.4.1 windows one click installer, especially as in some environments I am not "allowed" to use a local postgres account. So to install 8.4.1 on various windows machines I use the following process: a) download the "binaries only" distribuion b) create <program files>\PostgreSQL\ by hand c) extract the "pgsql"-subdir from the binaries-zip and put it into <program files>\PostgreSQL\ d) rename <program files>\PostgreSQL\pgsql to <program files>\PostgreSQL\8.4 e) add <program files>\PostgreSQL\8.4 to the system path f) give the following commandos: initdb --pgdata=d:\ghum\data84 --encoding=UTF-8 --locale=German_Germany.1252 --username=postgres cacls data84 /G postgreswindowsuser:F /E /T pg_ctl register -N pgsql-8.4 -D d:\ghum\data84 -U postgreswindowsuser -P postgreswindowsuserpassword that works for me on a variety of Windows Versions (Windows 7, XP, Server 2003), maybe it can help you too in situations when the one-click-installer is not suitable or leads to challenges. (BTW: did you check in your situation that there are NO 8.3 binaries within the System Path?) Best wishes, Harald -- GHUM Harald Massa persuadere et programmare Harald Armin Massa Spielberger Straße 49 70435 Stuttgart 0173/9409607 no fx, no carrier pigeon - %s is too gigantic of an industry to bend to the whims of reality -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general