Everything seems to load fine, I click on install, this is the error
Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request POST /wordpress/wp-admin/install.php.

Reason: Error reading from remote server


I try again, it says wordpress is already installed. I go to the login screen, but of course I don't know the password it gives, since that error keeps popping up?

Any ideas.

well I suggest you use your PHP My Admin Alternative and look at the database name you choose to install your wordpress at then look at the table wordpress user table then choose the admin and change the password with MD5 and put new one and then log in with it after you save the changes I think this could help you to enter if the wordpress installation complete successful or I think you have to delete it and drop your database and start again if that's not help you I think then you should ask for help at IRC ...
hope that help you