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This may make it a little easier to carry out.

http://www.htaccessredirect.net/

A 301 redirect to the root domain should do the trick.

You could set up a HT access file to eradicate the issue and divert one page to the other

http://httpd.apache.org/docs/1.3/howto/htaccess.html

You could set up a canonical tag to show Google that the urls contain the same page.  This would remove the duplicate content issue. For futher advice please  browse this link. http://googlewebmastercentral.blogspot.com/2009/02/specify-your-canonical.html