How to download Non-Installer (ZIP) Postgres 8.3 for Windows?

Hi,

I'm trying to download the ZIP archive for Postgres 8.3 on Windows, but I can't find a download location where I do not
needto register with EnterpriseDB 

When I go to http://www.enterprisedb.com/products/download.do and click on the Windows link for Postgres 8.3 I end up
onthe "Please register" page. 

When I follow the download link from http://www.postgresql.org/download/ I wind up at
http://www.enterprisedb.com/products/pgbindownload.dobut there is no link to version 8.3 

So how do I download the "binaries only" (no installer) bundle of Postgres 8.3 for windows?

Regards
Thomas