duplicate content on http://www.spotcream.com and http://spotcream.com.

I am using http://nibbler.silktide.com/reports/spotcream.com

this enables me to check errors on my site and im having problems

duplicate content on http://www.spotcream.com and http://spotcream.com.

i know http://spot… should be forwarding to http://www. but it doesent show.

how can i prevent this im not sure if i should add something to php.ini or .htaccess.

i have a private hosting account that i have enabled php5 on and i have to add in php.ini in several places.

But when i designed it i did it on my computer using wampsever so i just copied over the php.ini file from that.

any help would be great.

Damien