Here are the steps:

1. Go to http://rubyonrails.org/download
2. Install Ruby
3. Install RubyGems
4. Run [ gem install rails ]
5. Run [ gem install mysql ]  (in case we want to use mysql as db, sqlite is fine though)
6. Run [ gem install rake ]
7. Run [ gem install sqlite3-ruby ]
8. Extract redmine (I extracted to C:\Ruby\redmine-0.8.4)
9. Browse to redmine folder/config
10. Copy database.yml.example to database.yml
11. Set database options for production:
    1. In production:
       1. adapter: sqlite3
       2. dbfile: db/prod.db
       3. host: localhost
12. Get sqlite3.dll from sqlite 3 distribution (http://www.sqlite.org) and put in Ruby/bin directory
13. Browse to Redmine directory in command prompt
    
14. Run [ rake db:migrate RAILS_ENV="production" ]
15. Run [ rake redmine:load_default_data RAILS_ENV="production" ]
16. Run [ gem install mongrel ]
17. Run [ gem install mongrel_service ]
18. Run [ mongrel_rails service::install -N Redmine_Server -D "Redmine Server on Mongrel" -e "production" ]
19. Start service and set to “Automatic”
20. Username: admin Password: admin
21. Refer to http://www.redmine.org/wiki/redmine/RedmineInstall for SMTP config (If you want emails generated for tickets, etc.)
22. Install CollabNet SVN as svnservice (WebDAV not needed), svn root C:\svn_repository
23. Start service “CollabNet Subversion svnserve”
24. Run [ svnadmin create c:\svn_repository ]
25. Uncomment anon-access = read, auth-access = write, password-db = passwd in svnserve.conf
26. Add users to Redmine, have user change password to whatever they want it to
27. Add users to passwd (same username), all plaintext, so create random passwords for each user and have them record it (cannot be changed unless requested by admin, and admin will know what pw is)
28. Restart Redmine_Server service
29. Create subfolders for projects, and trunk/tags/branches for each project
30. Add svn://localhost/projectname as project root for each project in Redmine