Hello, CDE has not been ported to FreeBSD yet. You can make a port request at the PCBSD forums. Go to the Port Request section at : forums.pcbsd.org
PC-BSD is Free and Open Source, just like FreeBSD on which it's based. This means it's free to download, free for personal use, free for modification and free for reuse. PC-BSD-original components are BSD-licensed, FreeBSD components are BSD-licensed, and some other system packages are licensed under other open source licenses (mostly GPL variants). The hardware compatibility list is the same as FreeBSD 9.1's, but it's not yet published. Users have reported some success with Thinkpads. Try it!
It will if you don't select the correct partition. You'll want to carefully read through the section on Dual Booting first: wiki.pcbsd.org/index.php/Dual_Booting. Hope that helps!
Thank you! Theoretically yes, and you're more than welcome to share your results. The new Warden in 9.1 supports 3 types of jails: traditional, ports, and Linux.
You probably have UFS rather than ZFS volumes. In that case you would use the 'mkdir' command at the shell to create the needed directories, and disregard all the advice about quotas. Most of the rest of the setup is the same from there. If you need help, go to forums.freenas.org.
Welcome to the PC-BSD Community portal, where users from PC-BSD upload their videos that they wish to share with other with a hint of homage.