Hi I have an older dv camera (JVC GR-DVL820EA) and would like to run it on py dual core pc with windows 7 professional. I installed my video editing software and a new firewire card and when booted it up said it couldn't install driver. Later on it said that this version of windows doesn't support firewire.
Windows 7 does support firewire, you need to make sure that the card you got has Windows 7 drivers. A "New" card is not always a NEW card but rather one that is several years old and just not sold yet. Checking the vendor's web site for new drivers won't hurt.