Original MS-DOS disks for Commodore PC 30 iii?

Hi! I have been searching a while for the original MSDOS 3.5" disk that was included with the Commodore PC 30 III (MSDOS 3.3, I think), but so far I have not found anything on the web. Does anybody have this disk, or know ehere they are to be found? I am having some trouble using the PC with a Commodore mouse (in standard MSDOS 6.22). I know there are MSDOS 3.20 available, but I need the version that supports 1.4Mb 3.5 floppies and can be booted from a 3.5". I would be eternally grateful for any help...


All best,
Bernaard