I would advise against using that ancient mobo! It uses the old NForce3 chipset, and we're on NForce4! Don't use old chipsets - it can only end in pain...
Check out MSI's K8N Neo4 Platinum which made my top hardware list. Very nice mobo, and a worthy successor to the Neo3 Platinum.
I've seen many floppy drives + card readers at various locations (both online and in stores) but I honestly have never looked into them. It's not something I need, so I don't know much about them, other than they exist. But I do know that Atech is a huge manufacturer of card readers of all shapes and sizes, so perhaps they have something good.
I have a 3.5" 4-port USB bay in my system. It's made by Soyo, actually. I wonder if they're still in the USB bay business, but it's worth a shot. Otherwise, check out Atech.