On Windows 2000 with adaptec PCMCIA-SCSI Adapter the DSU has recognized but in Photostyler the SCSI-host wasn`t found.
Sounds familiar. I've never been able to communicate with the DSU, as described in this thread: viewtopic.php?f=2&t=329
Regarding the other issues you mentioned, you can check the instruction manual found here, but as far as I remember it doesn't include any detailed technical specifications: http://faqs.kodak.com/kodakprofessional/FAQ_46_440.shtm
Don't know if you're able to power the winder when it's detached from the camera (??), but I could try to meter the voltage when I get back home next week.
Good luck. Please let us know how it works out.