Can I tether two mac computers

I saved some video files a long time ago when I first got my emac and if I try to move them to edit, they cannot be opened but I can open them on the computer where I have them stored. I have kept this old comptuer for years because it is the only place I have these videos. Can I tether my old mac to a new mac with firewire and edit them on the new computer as if the old one is an external HD?