Forum Storing Files, Avatars, Uploads on different subdomain
 

I hope this will be a small question. Is it possible to store Uploads, Avatars, and other files on a separate subdomain? I tend to put any files and images on a subdomain running lighttpd, to cut down on bandwidth usage. If so, where would I make the setting changes?

P.S. I set this thread Prefix to Forum, but it really applies to everything.