Cathy's computer is assembled. She bought the parts at OTV and I put it together. We started installing Windows XP and when I attempted to connect it to the Internet, I realised I'd put the motherboard in without making sure all the back panel jacks were accessible, and here the network jack (and the firewire, too) are obstructed by part of the back panel. Today after work I'll fix it, but it means unplugging most of the cables and unscrewing the motherboard from the case to re-align it.