Partitioning drives

[Betti Ann & Preston Smith]

I am about to install Kubuntu  6.06 Beta on my system

I have a 30GB drive with XP on it and I would like to maintain a dual 
boot capability.  I also have a slave 6.0 GB drive on which I want to 
install Kubuntu

I think I should have a /home directory so that when 6.06 final comes 
out I can do a reinstall without losing my data

I know very little about Linux so I am looking for guidance on what 
partitions to place on the Linux drive, their sizes, which should be 
bootable, logical or primary, what mount points to use, etc.  In effect 
after looking at the Partitioning phase of the installation, I had no 
understanding about what I was doing so can someone walk me through the 
process as presented in the 6.06 installer or point me to a FAQ/HOWTO 
that provides a simple explanation about what has to be done

Thanks

Preston