Redirect www. without using .htaccess

Hey Everyone,

I am trying to get my website to redirect http://www.techunfolding.com to http://techunfolding.com. I have been looking around on the internet but every solution involves modifying the .htaccess hidden file. I would do this but the problem is my hosting provider ( Yahoo ) doesn’t allow access to it ( i messaged them and that’s what they said ).

So what i am looking for is an alternative to do this?

Any help would be great.

Thanks.