Hi Peter,
I have imported compact S-VHS and Hi8 tapes into Premiere Pro CS5. I used the respective S-video-out of my analog cameras connected to a Canopus ADVC-55 (this is the digitizer) which connects through firewire to a PC or Mac, no drivers needed. Import into PPRO through the capture menu. Only downside: you can't control camera with PPRO, you have to use capture in PPRO and push "PLAY" on your camera and finish by hitting "STOP" on your camera and stop capture in PPRO. Then you edit out any start and stop blanks.
Probably a digital Hi8 camera can connect directly to your PC or Mac when it has a firewire connector and may be controlled by PPRO's capture play and stop controls. I have no experience with digital Hi8 cameras.
Hope this helps nonetheless.
Jaap