Alright, I guess there will be no more replies to this thread, as it's been almost a month since the last posting. Anyway, thanks to anyone who participated!

There is only one more thing I can think of: I can look up the credits for Softwindows-1-68k and try to find contact to the developers, using google. Probably they can tell for sure, if there ever was a 68k-Version of SoftWindows-2, and if, where I could get it. However I know from various experiences how painful it can be to search a software-author via google, especially if he/she has a rather common name.

xx(