1. Copy current wp files fully in your local system.
2. Then you can upload all the files your requirement folder.
3. Then you go current WP folder
4. Click General
5. Change the site url and blog url
Finally you change the path. Try above things. Below i find one of introduction for above topic. I found the below article page search in google via.
http://help.yahoo.com/l/us/yahoo/smallbusiness/webhosting/wordpress/wordpress-26.html