Older Windows versions

Hi, I need an older version of PostgreSQL for windows since I,
unfortunatelly, have to develope a Win32 application with Qt-Non
Commercial, and the available drivers for Postgre are for Versions 6.x
and 7.x.

I went to the downloads section on postgresql.org but I couldn't find
anything but the 8.x.x versions for Windows.

Is there any wway to get the older versions for Window$?

Thanx in advance.

--
Leonardo Mateo.
Keep bugs out, close your Windows!!!.