Oh yes I remember that one. I don't seem to be able to source it in the UK anymore unfortunately - even tried ebay. I can still buy one of the Shuttle barebones systems with it in but I don't really fancy one of those, a but pricey, and I hate building them.
Now I come to think of it, I don't think I've seen a budget (eg Skt A) matx board with firewire. Perhaps I'll have to get a firewire card. The user will still have 1 PCI slot free. With onboard sound, video and networking that should do him.