Installing Drupal

I am a sys admin and am new to drupal. Another college created a site. I am tasked with backing it up and figuring out how to move it to another server. I have read a lot of the documentation and even setup a basic drupal site of my own. Now I am trying to figure out how to backup the site and if need be restore to another system. I can move everything off to a new system and the main page comes up fine. However all the links on the page are now broken.

The requested URL /content/contact-information was not found on this server

Hi I am trying to set up (for the first time) on Namesco (Zeus) host. Before I get to the end of the install I get this error:
An AJAX HTTP error occurred. HTTP Result Code: 500 Debugging information follows. Path: http://www.tregaskis.org/install.php?profile=commerce_kickstart&locale=e... StatusText: Internal Server Error ResponseText:

Please can anyone help?

I developed a site with Drupal 7 and migrated it to live server. i.e. FTP all the files, imported database and changed the settings.php file also. My previous url was http://localhost/illl
now the url has been changed. The site at new url is showing home page perfectly but other links and pages are not working. Plz help me to resolve this problem....

Hi Sir/Miss,
I am trying to import mySQL into my first website. When I import my database into the website, it prompts up problem which make me cannot continue. Here is the message.

Error
SQL query:

-- -- Dumping data for table `actions` -- INSERT INTO `actions` (`aid`, `type`, `callback`, `parameters`, `label`) VALUES ('comment_publish_action', 'comment', 'comment_publish_action', '', 'Publish comment'), ('comment_save_action', 'comment', 'comment_save_action', '', 'Save comment'), ('comment_unpublish_action', 'comment', 'comment_unpublish_action', '', 'Unpublish comment'), ('node_make_sticky_action', 'node', 'node_make_sticky_action', '', 'Make content sticky'), ('node_make_unsticky_action', 'node', 'node_make_unsticky_action', '', 'Make content unsticky'), ('node_promote_action', 'node', 'node_promote_action', '', 'Promote content to front page'), ('node_publish_action', 'node', 'node_publish_action', '', 'Publish content'), ('node_save_action', 'node', 'node_save_action', '', 'Save content'), ('node_unpromote_action', 'node', 'node_unpromote_action', '', 'Remove content from front page'), ('node_unpublish_action', 'node', 'node_unpublish_action', '', 'Unpublish content'), ([...]

MySQL said:

#1062 - Duplicate entry 'comment_publish_action' for key 1

Windows xp desktop...
I tried installing re: through Web PF installer 4.0 from the 'how to install windows' link.
1st time, I got errors for dependencies not installed... Asp.net Web pages 1 and Web matrix 2 release candidate..
2nd time started over... this time everything installed
Got to screen Default root amin acct. for 'root', 'localhost' and its asking for password
Won't advance w/o one... anyone have any ideas...

I am trying to migrate my localhost files from my old XP windows machine to a new Windows 7 one. I've reinstalled Wamp and copied all the old sites files to my new machine. I modified the hosts and httpd-vhosts files and uploaded the database files to mysql. The sites show up and appear to work fine with one exception, when I try to login with my admin account nothing happens. I'm not logged in, no error message, nothing.

If anyone has any ideas, I'd really appreciate it.

Thanks
Sharon