Not sure if this is the correct forum for this BUT - I've been using TVeresity Media Server for the past 3 months or so in conjunction with my PS3 and Windows XP PC. It is awesome! It allows you to stream media files, (wirelessly or wired) to your PS 3 or Xbox 360. Easy to use GUI and it's FREE. Check it out.
http://tversity.com/home/
http://tversity.com/home/