Better convert these externally to MS DV AVI type2. They will import without any problems and there is no need to install any crap from Pinnacle, possibly leading to all kinds of problems.
I use a Pinnacle Dv500 card to digitize analog 8mm camcorder tapes to DV AVI (Dual boot Win2k for Dv500 and WinXp for Premiere Pro)
The early (through version 3, I think) Dv500 created files that would ONLY work on a computer with the Dv500 card installed... later files (driver software 4x) were created in "generic" AVI that would work on any computer
Does your codec require a hardware card be installed?