All other options are just like previous versions. see here
how to install latest version remastersys in ubuntu 9.10
add the following repository to your apt source by editing /etc/apt/sources.list or
add repository using System-->Administration-->Synaptic package Manager --> Settings -->Repositories-->Third-party-software-->Add
deb http://www.geekconnection.org/remastersys/repository karmic/
$sudo apt-get update
$sudo apt-get install remastersys (or use synaptic)
I have created a Ubuntu 9.10 Live CD with Multimedia Support, java, LAMP server, GCC and lot more.......