As described, it may not be possible, but please tell us:-

1] What exactly is the distribution into which you want to "install a .deb file from knoppix" ?

2.1] Which .deb file (or files) do you have in mind ?
and
2.2] do you actually mean any normal Debian package or a special one provided only by Knoppix ?

3] Which Knoppix do you have, and how are you running it - e.g. Live CD or Live DVD or what ?