Having problems reinstalling postgreSQL; forgotten password?
This could be your answer if you running windows XP.
1, go to start menu (bottom left of screen)
2, under run type cmd (press enter)
3, on screen that pops up type net user postgres postgres
4, run installer again
This did not work for me still think i have a firewall issue, but i have read a forum post on postgreSQL website where it has worked for many people. Hope you have success because i am tearing my hair out and about to jump off a cliff