You should be able to do what you want with an .htaccess file that redirects the non-www to the www version.
I think this should do it:
Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} ^coloradogamblingforum.com
RewriteRule (.*) http://www.coloradogamblingforum.com/$1 [R=301,L]
Just copy and paste this into a text file, name it .htaccess and upload it to the public_html or equivalent directory. All it does it says to visitors and search engines that coloradogamblingforum.com has permanently moved to http://www.coloradogamblingforum.com .
This will sort out the other guy’s problem of getting links to the www and non-www versions of his site as well. It will also ensure that Google passes the proper amount of PageRank.