Please Follow below Steps.
1. Open your core_config_data table in phpMyAdmin.
2. Find the following rows for your unsecure section, they should look like the following:
PATH VALUE
web/unsecure/base_url http://www.mydomain.com/
web/unsecure/base_link_url {{unsecure_base_url}}
web/unsecure/base_skin_url {{unsecure_base_url}}skin/
web/unsecure/base_media_url {{unsecure_base_url}}media/
web/unsecure/base_js_url {{unsecure_base_url}}js/
3. Replace http://www.mydomain.com/ with your appropriate domain url (trailing slash necessary) and if you’ve installed in a subfolder append it with a / after it.
4. Find the following rows for your secure section, they should look like the following:
PATH VALUE
web/secure/base_url https://www.mydomain.com/</td></tr>
web/secure/base_link_url {{secure_base_url}}</td></tr>
web/secure/base_skin_url {{secure_base_url}}skin/</td></tr>
web/secure/base_media_url {{secure_base_url}}media/</td></tr>
web/secure/base_js_url {{secure_base_url}}js/</td></tr>
5. Replace https://www.mydomain.com/ with your appropriate domain url (trailing slash necessary) and if you've installed in a subfolder append it with a / after it. If you haven't received your security certificate and enabled TLS/SSL yet, use http instead of https
6. Clear /var/cache, /var/session after changing base_urls and when you have access to your system reindex your URL_rewrite index. Clearing cache and sessions is necessary because your config is cached and clearing it forces a reread of the configuration data from the core_config_data table and reestablishment of sessions with the proper information.
NOTE: IF YOU HAVE SET YOUR BASE_URL correctly for web/unsecure/base_url and web/secure/base_url YOU DO NOT HAVE TO MESS AROUND WITH CHANGING THE {{UNSECURE_BASE_URL}} and {{SECURE_BASE_URL}} MACROS in the rest of the entries.
This is going to definitely work.