Hey Nem,
For firewire, look for "IEEE 1394"
Like I mentioned before, I purchased the asus a7n8x "deluxe" and it has firewire support. I believe only the deluxe version will have the firewire support though.

Here are some detailed specs on it from where I bought the mobo
https://direct.mwave.com/mwave/doc2/a19041.html

Also here's where I bought it from:
www.mwave.com

I believe I paid about $145 for it.

Hope this helps,
George