If pkgs are on flash drive. Kanotix should have made a drive icon for it on desktop then you could use dpkg -i *.deb from flash directory holding pkgs.
You can also mount the flash drive,cd to directory with debs and run same command. You can also use find to look for location of dl'd .debs, or go to /var directory and look for apt/cache to seek debs.
has apt/aptitude/dpkg tutorials and other goodies. Good luck.