Videomaker – Learn video production and editing, camera reviews › Forums › General › Video and Film Discussion › Need HELP! with my Sony HDR-FX7 connectivity problem › Blackmagic Intensity will
Blackmagic Intensity will work for what you want and for many other things in the future, so is a good investment. The idea cfxcorp mentioned about looking for a used computer with firewire is an excellent suggestion. Maybe if you ask around your family members or friends you can get one for free.