copy live site to local PC

Hi Everyone.

I searched for the solution to this problem, but was unable to find one. I had a developer create my site for me to get me started. The developer created the site www.classcurriculum.com and put it up on the web.
I now want to download the site and make changes to the site on my local PC, so I did the following;
-Installed WAMP
-Uncommented the “LoadModule rewrite_module modules/mod_rewrite.so” and added the local directory in httpd.conf
-Downloaded the site from the host provider
-Exported the DB from the host provider
-Imported the database to my PC and checked it in PHPmyAdmin, localhost has all permissions
-Installed all the drupal site files to my “sites” directory
-Changed the settings.php file;
-----$db_url = 'mysqli://root@localhost/DATABASE' (DATABASE is the DB that was imported to local PC)
-----$base_url = 'c:/sites';

I can see the site, but it only has text on it, no theme. Also, when I go into http://localhost/?q=admin, it comes back with “Access denied You are not authorized to access this page.” When I go into http://localhost/update.php, the screen goes completely blank, but what’s interesting is that my favicon appears in the address bar. Also, when I click on any links on the front page, it comes back with a “page not found”

I’m not really sure what to do from here. Thanks in advance for your help.