5tupot, just use the DBAN link i provided you with, create a floppy, choose the amount of passes you wish it to make using the various algorithms and leave it to do its work. They all use the same algorithms to write over all the data anyway. But unless your into kiddy p**n or some other dodgy activity, i don't see why anybody would goto the hassle of trying to read data off of a clean format.
Killdisk freeware is ok, but it's not as thorough as DBAN, we at work used to use Killdisk to erase data from obsolete hardware, but we changed to DBAN a while back and its a lot more thorough and conforms to standard practice.