Hi klipp,
The last time I saw an installer like that, there was something else on disk 1 that started the install and handled the rest of the files (which were just on the other floppies) - dunno if it was the same setup or not, so might not help. Either that or they are like IBM's self-extracting disk archives - in which case, running each at a commandline should prompt you to insert a floppy which it will format and/or extract to.
I know someone here has a copy floating around (mine are long since gone) - so hopefully someone with some actual knowledge in that area (unlike me

) can answer.
-Robert