not to be rude or anything, but there's plenty info out there (this forum, google) on preparing disk for linux. it requires you to type two words or so only.
as for the slack install, boot from cd, press enter
at prompt type root
then use cfdisk /dev/hdX (x is your 16 gig drive) to partition the drive (dont forget to write)
fom there just type setup and follow the prompts and that's all