Im running xp, i went out and bought a 500 Gb hard drive, a firewire (4-6pin) and a board with 2 firewire ports and 4 usbs. When i got home the external hard drive worked fine, its just my computers ablility to find my XHA1 when its plugged in. ive looked around for help, and i found a thread or so. My computer doesnt even ackowlge its there. So i decided its a bad board on the Camera. Is there any other solutions..? And if i do send it back for a new board, how would i go about doing so, Either ask the acaully Canon dealer or from where i bought it (www.us1photo.com). Thanks too much, if you have anything it will help, im using it for school announcements so the faster the better 