no atrain, my problem is not with the md drivers.
thanks for the suggestion ecoutelemonde, but that wasn't my problem.
actually, i'm not clear as to what my problem was.
in addition to my previous posts, i again went onto the second computer, windows updated it like it needed (all they way to sp1), and again tryed various versions of the sony md software doing complete uninstalls along the way. still no succcess.
today, however, on the original computer, i did the typical complete uninstall (directories, files, registries), went into disk manager and uninstalled all usb controllers (there were 5 including "netmd"). restarted as required. windows detected usb drive, did its thing. i installed just sonicstage 2.3. restarted. plugged in the minidisc and that's when something magical happened: my minidisc was detected. why my md is not being detected on the other machine though, i'm not sure. i'm not going to play around with it anymore however since it is not my computer and i've got it working on my own computer.
yeah, i'm sure no one cares at this point, but thanks again to people who offered their advice.