how do i allot the partition for red hat 9?

[zd]

hello,all:
my disk have had 4 primary partitions:one fat16,one fat32,one ufs,and an
extended.and,
i have some other free space without any  file system made on it.i would
like to install
red hat 9 useing the free space, but don`t know how to make the partition
layout.should i allot the file system for red hat 9 inside the extented
partition?if not,how can i deal with it?
thanks in advance!

eagon