Hi,
http://fedoraproject.org/wiki/How_to..._use_a_Live_CD
As root user or using sudo,
# yum install spin-kickstarts
# cd /usr/share/spin-kickstarts
Edit the file fedora-livecd-desktop.ks
Remove the packages you don't want either by delisting them or add a - in front of them
@office group installs Openoffice.org stuff
If you want to remove Fedora branding
--
# rebranding
-fedora-logos
-fedora-release
-fedora-release-notes
generic-release
generic-logos
generic-release-notes
---
Then run this on the command line
# setenforce 0
# sudo livecd-creator --config=fedora-livecd-desktop.ks --cache=cache/ --fslabel=my-remix
--
Hope this helps