I have a link on my PC at work, cannot remember what it is but believe it to be something like mac-terminals.com.
I found it a couple of years ago, although Mitsubishi & Beijers have web sites, they do not support the old mac.
I think there may be a link on the beijers site though, if I remember I will post the link
By the way don't you think an upgrade to E series or GOT might be in order?