http://www.enterprisedb.org/products-se ... ad#windowsThere's the link.
I may as well just tell you the story so we know where we are. Basically I installed hold em manager on my computer, which automatically installed postgreSQL, I then purchased pokertracker and when I tried to connect to the database it said incorrect password. In hindsight I now know that's because the password was set at something different but at the time I was unaware of this so uninstalled postgreSQL.
So basically I don't know which version I need and feel quite out of my depth with this software right now, to be fair my attempts to rectify the situation on my own were quite short lived but I just found myself getting more and more frustrated with everything I tried.