Firewire card malfunction

Tried to plug a DV cam into the firewire card at work - a Hercules DV Action! DVD. It has worked before, but now - no. There are no drivers, it's supposed to work with Win XP's built-in drivers. It showed up as a trouble device ("This device cannot start") so I did the only drastic thing I could think of - I installed SP2. Now the firewire card shows up as a normal working device, but nothing happens when I attach periferals to it. Maybe it's just broken...

Update: tried the camera in a different computer and it worked fine - so the card probably is broken...
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